Answer:
0.40
Step-by-step explanation:
Members who run only long distance = 8%
So, probability that a member will run only long distance = P(A) = 0.08
Members who compete only in field events = 32%
So, probability that a member will compete only in field events = P(B) 0.32
Members who are sprinters = 12%
So, probability that a member is sprinter = P(C) 0.12
We have to calculate the probability that a randomly chosen team member runs only long-distance or competes only in field events. i.e we have to find P(A or B). Since these events cannot occur at the same time, we can write:
P(A or B) = P(A) + P(B)
Using the values, we get:
P(A or B) = 0.08 + 0.32 = 0.40
Thus, the probability that a randomly chosen team member runs only long-distance or competes only in field events is 0.40
The probability that a randomly chosen team member runs only long-distance or competes only in field events is 0.40.
1. To find the probability that a randomly chosen team member runs only long-distance or competes only in field events, we need to add the probabilities of these two mutually exclusive events.
2. Given:
Probability of running only long-distance: 8% or 0.08Probability of competing only in field events: 32% or 0.323. Since these events are mutually exclusive (they cannot happen at the same time), we simply add the probabilities:
P(long-distance or field events) = P(long-distance) + P(field events)
P(long-distance or field events) = 0.08 + 0.32 = 0.40
Therefore, the probability that a randomly chosen team member runs only long-distance or competes only in field events is 40% or 0.40.
A rectangle whose area is 180 square feet has a width that is 3 feet less than the length. Find the dimensions of the rectangle.
Answer:
The length is [tex]15\ ft[/tex]
The width is [tex]12\ ft[/tex]
Step-by-step explanation:
we know that
The area of rectangle is equal to
[tex]A=LW[/tex]
we have
[tex]A=180\ ft^{2}[/tex]
so
[tex]180=LW[/tex] -----> equation A
[tex]W=L-3[/tex] ------> equation B
substitute equation B in equation A and solve for L
[tex]180=L(L-3)[/tex]
[tex]180=L^{2}-3L[/tex]
[tex]L^{2}-3L-180=0[/tex]
using a graphing tool------> solve the quadratic equation
The solution is [tex]L=15\ ft[/tex]
see the attached figure
Find the value of W
[tex]W=15-3=12\ ft[/tex]
To find the dimensions of the rectangle given its area, we set up an equation using the length and width of the rectangle. Solving the equation will give us the dimensions. In this case, the length of the rectangle is 15 feet and the width is 12 feet.
Explanation:To find the dimensions of the rectangle, let's assume the length of the rectangle is L feet. According to the problem, the width is 3 feet less than the length, so the width would be L - 3 feet. The area of the rectangle is given as 180 square feet, so we can set up the equation: L * (L - 3) = 180. Solving this equation will give us the dimensions of the rectangle.
Multiplying the binomials, we get L^2 - 3L = 180. Rearranging the equation, we have L^2 - 3L - 180 = 0. This is a quadratic equation that can be factored. Factoring, we have (L - 15)(L + 12) = 0. We can now solve for L by setting each factor equal to zero: L - 15 = 0 or L + 12 = 0. This gives us two possible solutions for L: L = 15 or L = -12.
Since we cannot have negative dimensions for a rectangle, we discard the negative solution. Therefore, the length of the rectangle is 15 feet. The width can be found by substituting this value back into the equation: Width = 15 - 3 = 12 feet. So, the dimensions of the rectangle are 15 feet by 12 feet.
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If price was $2.00 per gallon and decreased to $1.40 per gallon, how does quantity of gasoline demanded change?
The price and demand are inversely proportional to each other, When the price is less, the demand is higher. When the price is high, the demand is low.
So , as given, the gasoline prices has been decreased from $2.00 per gallon to $1.40 per gallon, so now the demand will increase. The quantity of gasoline that will be in demand will increase.
Answer:
The quantity of gasoline demanded will increase.
Step-by-step explanation:
We are asked to find the change in demand of gasoline, when price of gasoline decreased from $2 per gallon to $1.40.
We know that quantity of a product demanded is inversely proportional to supply of the product.
This means that an increase in price will decrease the quantity demanded, while a decrease in price will increase the demand.
Since the price of gasoline is decreased by $0.60 per gallon, therefore, the quantity of gasoline demanded will increase.
One of Alberto's zebra danios is 4/3 the lenght of one of his fancy guppies. Which fish is longer?
Answer:
The Zebra Danios!
Step-by-step explanation:
The zebra danios
4/3 is greater than 1, making it an improper fraction. Suppose that fancy guppy's length is x, the danios' length would be 4/3 x, which, since it is an improper fraction, is greater than x.
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A card is drawn from a well-shuffled deck of 52 cards. What is the probability that a red card appears?
1/4
1/2
1/13
0.26
Answer:
P (red) = 1/2
Step-by-step explanation:
It is given that a card is drawn from a well-shuffled deck of 52 cards and we are to find the probability of getting a red card.
We know that there are total 26 red cards in a deck (13 hearts and 13 diamonds).
Therefore, the probability of getting a red card P (red) = [tex] \frac { 2 6 } { 5 2 } [/tex] = 1/2
The probability of drawing a red card from a well-shuffled 52-card deck is 1/2 since half of the cards in the deck are red (26 out of 52)
Explanation:This question pertains to the topic of probability in Mathematics. There are 52 cards in a standard deck, half of which are red (26 red cards: 13 hearts and 13 diamonds). Hence, the probability of drawing a red card is the number of red cards over the total number of cards in the deck.
So, the probability of drawing a red card from a well-shuffled 52-card deck is 26/52, simplified to 1/2. Hence the correct answer from the given choices is 1/2.
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The first train leaves the station at 6:15 a m. The second train leaves at 6:55 am. How much does the sec ond train leave the station
Answer: 40
Step-by-step explanation:
second train leaves 40 minutes after
Consider the population of all 1-gal cans of dusty rose paint manufactured by a particular paint company. Suppose that a normal distribution with mean μ = 5 ml and standard deviation σ = 0.2 ml is a reasonable model for the distribution of the variable x = amount of red dye in the paint mixture. Use the normal distribution model to calculate the probabilities below. (Round all answers to four decimal places.)
(a) P(x > 5) =
(b) P(x < 5.4)=
(c) P(x lteq.gif 5.4) =
(d) P(4.6 < x < 5.2) =
(e) P(x > 4.5) =
(f) P(x > 4) =
Answer:
A) 0.5000; B) 0.9772; C) 0.9772; D) 0.8185; E) 0.9932; F) 1.0000
Step-by-step explanation:
For each of these, we will use a z score. The formula for a z score is:
[tex]x=\frac{X-\mu}{\sigma}[/tex]
A) Our X is 5, our mean is 5 and our standard deviation is 0.2:
z = (5-5)/(0.2) = 0/0.2 = 0
Using a z table, the value to the left of this, less than, is 0.5000; this means the area to the right of this, greater than, is 1-0.5000 = 0.5000.
B) Our X is 5.4, the mean is 5 and the standard deviation is 0.2:
z = (5.4-5)/0.2 = 0.4/0.2 = 2
Using a z table, the value to the left of this, less than, is 0.9772.
C) The probability for this will be the same as for B; there is no distinction between "less than" and "less than or equal to" in z tables.
D) We find the z score for each of the endpoints of this interval, find the probabilities and subtract them:
z = (4.6-5)/0.2 = -0.4/0.2 = -2; the probability is 0.0228.
z = (5.2-5)/0.2 = 0.2/0.2 = 1; the probability is 0.8413.
The area between them is 0.8413-0.0228 = 0.8185.
E) X is 4.5, the mean is 5 and the standard deviation is 0.2:
z = (4.5-5)/0.2 = -0.5/0.2 = -2.5; the probability less than this is 0.0062. This means the probability greater than this is 1-0.0062 = 0.9938.
F) X is 4, the mean is 5 and the standard deviation is 0.2:
z = (4-5)/0.2 = -1/0.2 = -5. Everything in the z table is larger than this, so the probability is 1.000.
What fraction will each person get if 8 friends share 5 apples equally? Enter your answer in the boxes.
Answer:
5/8
Step-by-step explanation:
5/8 is equal to 5 divided by 8 and your dividing 5 so all the friends can have a equal amount. every friend would also get 5/8 of a apple
Every friend would get 5/8 parts of the total apple.
What is fraction?A fraction is a part of a whole number, and a way to split up a number into equal parts.
Given that, 8 friends want to share 5 apples equally. We need to find that what fraction will each person get,
Since, we have 5 apples, which is to be distributed to 8 persons,
To find the same, we will have to, divide 5 apples equally among 8 persons,
Therefore,
If we divide 5 by 8 then the faction of 5/8 of the whole is the part that each of the 8 friends going to have,
Hence, each friend would get 5/8 parts of the total apple.
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One letter is selected from the words "conditional probability." What is the probability that an "t" or "a" is chosen?
Answer:
4 out of 22 = 4/22
Step-by-step explanation:
The imaginary number i is equal to
−1
, which expression is equivalent to −(4 + 3i) + (2 + 2i)?
A) 2 + 2i
B) 2 − i
C) −2 + i
D) −2 − i
Answer:
D
Step-by-step explanation:
An equivalent expression is an expression which is equal to −(4 + 3i) + (2 + 2i). You can expand or simplify an expression to make an equivalent expression. Combine like terms - constants with constants and imaginary with imaginary - to simplify.
−(4 + 3i) + (2 + 2i) = -4 + 2 -3i + 2i = -2 - i
Arsenic is a compound that occurs naturally in very low concentrations. Arsenic blood concentrations in healthy adults are Normally distributed with mean =3.2 micrograms per deciliter (ug/dl) and standard deviation sigma = 1.5. What is the range of arsenic blood concentrations corresponding to the middle 90% of healthy adults?
Answer:
0.7325 to 5.6675 ug/dl
Step-by-step explanation:
The middle 90% will be 45% above the mean and 45% below the mean. This means
0.5-0.45 = 0.05 and
0.5+0.45 = 0.95
We use a z table. Look in the cells; find the values as close to 0.05 and 0.95 as we can get.
For 0.05, we have 0.0505 and 0.0495; since these are equidistant from 0.05, we use the value between them. 0.0505 is z=-1.64 and 0.0495 is z=1.65; this gives us z=-1.645.
For 0.95, we have 0.9495 and 0.9505; since these are equidistant from 0.95, we use the value between them. 0.9495 is z = 1.64 and 0.9505 is z=1.65; this gives us z = 1.645.
Now we use our z score formula,
[tex]z=\frac{X-\mu}{\sigma}[/tex]
Our two z scores are 1.645 and -1.645; our mean, μ, is 3.2; and our standard deviation, σ, is 1.5:
[tex]1.645=\frac{X-3.2}{1.5}[/tex]
Multiply both sides by 1.5:
[tex]1.5(1.645)=\frac{X-3.2}{1.5}\times 1.5\\\\2.4675 = X-3.2[/tex]
Add 3.2 to each side:
2.4675+3.2 = X-3.2+3.2
5.6675 = X
[tex]-1.645=\frac{X-3.2}{1.5}[/tex]
Multiply both sides by 1.5:
[tex]1.5(-1.645)=\frac{X-3.2}{1.5}\times 1.5\\\\-2.4675=X-3.2[/tex]
Add 3.2 to each side:
-2.4675+3.2 = X-3.2+3.2
0.7325 = X
Our range is from 0.7325 to 5.6675.
Final answer:
The range of arsenic blood concentrations corresponding to the middle 90% of healthy adults is approximately 0.765 ug/dl to 4.035 ug/dl.
Explanation:
The middle 90% of a Normally distributed data set falls within approximately two standard deviations of the mean. In this case, the mean is 3.2 ug/dl and the standard deviation is 1.5. To find the range of arsenic blood concentrations corresponding to the middle 90% of healthy adults, we can calculate the upper and lower boundaries.
First, we need to find the Z-scores that correspond to the 5th and 95th percentiles. The Z-score formula is:
Z = (x - mu) / sigma
Applying the formula, we get:
Z_lower = (x_lower - 3.2) / 1.5 = -1.53
Z_upper = (x_upper - 3.2) / 1.5 = 1.53
Next, we need to find the corresponding x values. Rearranging the Z-score formula, we can solve for x:
x = Z * sigma + mu
Plugging in the Z scores, we have:
x_lower = -1.53 * 1.5 + 3.2 = 0.765
x_upper = 1.53 * 1.5 + 3.2 = 4.035
Therefore, the range of arsenic blood concentrations corresponding to the middle 90% of healthy adults is approximately 0.765 ug/dl to 4.035 ug/dl.
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A composite figure is made up of several simple geometric figures such as triangles, rectangles, squares, circles, and semicircles.
To find the area of a composite figure, separate the figure into simpler shapes whose area can be found. Then add the areas together.
(SEE EXAMPLE ATTACHED)
HERES WHAT WE KNOW ABOUT COMPOSITE FIGURES:
Composite Figures. A figure (or shape) that can be divided into more than one of the basic figures is said to be a composite figure (or shape). For example, figure ABCD is a composite figure as it consists of two basic figures
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See the attached picture for the answers:
Predict how many times you will roll a number less than 5 if you roll a standard number cube 250 times
Final answer:
The probability of rolling a number less than 5 on a six-sided die is 2/3. When rolling the die 250 times, this probability suggests that a number less than 5 would be rolled approximately 167 times.
Explanation:
To predict the number of times you will roll a number less than 5 when rolling a standard six-sided die (with faces numbered 1 through 6), it's important to first understand the probability of rolling a number less than 5 for any single roll. Our numbers of interest here are 1, 2, 3, and 4.
The probability P of rolling any one of these four numbers on a six-sided die is 4 out of 6 (since there are 4 favorable outcomes and 6 possible outcomes in total), which simplifies to 2/3. This means that on any given roll, you have a 2/3 chance of rolling a number less than 5.
When rolling the die 250 times, we would expect this 2/3 probability to hold true on average. Therefore, we calculate the expected number of times a number less than 5 appears as follows:
Expected number of rolls less than 5 = Total number of rolls × Probability of rolling a number less than 5
Expected number of rolls less than 5 = 250 × 2/3
Expected number of rolls less than 5 = approximately 166.67
Since we cannot roll a die a fraction of a time, we would predict that you would roll a number less than 5 approximately 167 times out of 250 rolls.
If you have 3 4/6. Cups of sugar then divided it by 2 cups then added 4.9 cups how many eould you have
Answer:
11/6 or decimal 1.8333... + 4.9 = 6.733333....
Step-by-step explanation:
Simplify the following:
(3 + 2/3)/2
Express 4/6 in its lowest form by cancelling out gcd(4, 6) = 2 from the numerator and denominator. 4/6 = (2×2)/(2×3) = 2/3:
(2/3 + 3)/2
Put 3 + 2/3 over the common denominator 3. 3 + 2/3 = (3×3)/3 + 2/3:
((3×3)/3 + 2/3)/2
3×3 = 9:
(9/3 + 2/3)/2
9/3 + 2/3 = (9 + 2)/3:
((9 + 2)/3)/2
9 + 2 = 11:
(11/3)/2
11/3×1/2 = 11/(3×2):
11/(3×2)
3×2 = 6:
Answer: 11/6 or decimal 1.8333... + 4.9 = 6.733333....
By accident, 8 burned out bulbs have additionally been mixed in with 30 good ones. Ken is replacing old bulbs in his house. If he selects two bulbs at random from the box of 38, what is the probability they both work?
P(Both Work) =
435 / 703
P(Both Work) =
28 / 703
P(Both Work) =
16 / 361
P(Both Work) =
169 / 256
Answer:
The correct answer option is P(Both Work) = 435 / 703
Step-by-step explanation:
We are given that in a box of total 38 bulbs, 8 are the defective ones while the rest are good.
If Ken selects two bulbs at random from the box, we are to find the probability that they both work.
1st bulb: P (bulb works) = [tex]\frac{30}{38} [/tex]
2nd bulb: P (bulb works) = [tex]\frac{29}{37} [/tex]
P (Both Work) = [tex]\frac{30}{38} \times \frac{29}{37}[/tex] = 435 / 703
Answer:
The correct answer is first option. P(Both Work) = 435/703
Step-by-step explanation:
It is given that,
There are 8 burned bulbs and 30 good bulbs.
Therefore total number of bulbs = 8 + 30 = 38
To find the probability
We have to take two working bulbs from total bulbs.
Total bulbs = 38
The probability of taking two working bulbs = P(Both Work)
P(Both Work) = 30C₂/38C₂
= (30 * 29)/(38 * 37) = 435/703
Therefore the correct answer is first option
in a church, the ratio of adults to children is 6 to 11. if there are 306 people in the church, how many children are there?
Answer:
198
Step-by-step explanation:
If the ratio of adults to children is 6:11, then 6/17 of the people are adults and 11/17 of the people are children.
11/17 × 306 = 198
There are 198 children.
London owns a hybrid SUV that can travel 400 miles on a 15-gallon tank of gas. Determine how many miles he can travel on 6 gallons and number 16.
Answer:
Step-by-step explanation:
Find the measure of arc KL.
Answer:
The measure of arc KL is [tex]145\°[/tex]
Step-by-step explanation:
we know that
[tex]arc\ JK=arc\ KL=x\°[/tex]
so
[tex]2x+70\°=360\°[/tex] -----> complete circle
solve for x
[tex]2x=360\°-70\°[/tex]
[tex]2x=290\°[/tex]
[tex]x=145\°[/tex]
What is the volume of this right rectangular prism. 7 feet length 2 feet width and 3.5 feet Height
i think the answer to this problem is49
Answer:
The volume of this right rectangular prism is 49 Cubic feet.
Step-by-step explanation:
Here, the data is given
Lenght (l) = 7 feet
Widht (b) = 2 feet
Height (h) = 3.5 feet
Now, The Volume of rectangular prism
= l × b × h
= 7 × 2 × 3.5 feet
= 7 × 7 feet
= 49 cubic feet
Thus, The volume of this right rectangular prism is 49 Cubic feet.
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(Q10) Compute the exact value of the function for the given x-value without using a calculator.
ANSWER
a. 216
EXPLANATION
The given function is;
[tex]f(x) = {6}^{x} [/tex]
We want to find the value of this function when x=3.
We substitute this value into the function to obtain,
[tex]f(3) = {6}^{3} [/tex]
[tex]f(3) = 6 \times 6 \times 6[/tex]
[tex]f(3) = 216[/tex]
Answer:
The correct answer is option a. 216
Step-by-step explanation:
It is given that,
f(x) = 6ˣ for x = 3
To find the value of f(x)
f(x) = 6ˣ
when x = 3 we can write,
f(3) = 6³ = 6 * 6 * 6 = 216
Therefore the value of f(x) when x = 3 is 216
The correct answer is option a. 216
i have a super hard question and i need help
what is [tex]5^{2}[/tex] equal to?
Answer:
[tex]5^{2}[/tex] = 25 :) hope this helps
Step-by-step explanation:
Determine the eccentricity, the type of conic, and the directrix for
r=6/1+2cos theta
Answer:
Choice C is correct
Step-by-step explanation:
The polar equation of the conic section is in standard form. The eccentricity is simply the coefficient of cos theta; thus e = 2
The eccentricity being more than 1 implies the conic section is a hyperbola.
To determine the directrix, divide 6 by 2 to obtain 3. The conic section opens to the left thus;
directrix; x = 3
Answer:
Choice C is correct
The diameter of the planet mars is approximately 6.794 × 10^6 meters. Which is an equivalent way to express that measure?
a- 6.794 billion meters
b- 679.4 million meters
c- 67.94 million meters
d- 6.794 million meters
Answer:
It is D.
Step-by-step explanation:
10^ 6 = 1,000,000 = 1 million.
So it is 6.794 million meters.
Which type of function correctly describes the exponential function
g(x)=3(4)^x-5
Answer:
See below.
Step-by-step explanation:
This function g(x) = 3(4^x) - 5 is an exponential function since it has a variable as an exponent. It has a initial value of 3 and a multiplicative rate of change of 4. The function itself when x = 0 is y = -2.
El área de una propiedad en metros cuadrados, mide 704/5. Se construye una casa que ocupa 5/6 del área total. La mitad del área restante se utiliza para construir una terraza, cuanta área falta por construir?
Answer:
The area left to build is [tex]\frac{704}{60}\ m^{2}[/tex]
Step-by-step explanation:
The question in English is
The area of a property in square meters, measures 704/5. A house is built that occupies 5/6 of the total area. Half of the remaining area is used to build a terrace, how much area is left to build?
we know that
The total area represent the fraction 6/6
A house represent the fraction 5/6 of the total area
The remaining area represent the fraction (6/6)-(5/6)=1/6 of the total area
If half of the remaining area is used to build a terrace
then
the area of the terrace represent the fraction (1/6)/2=1/12 of the total area
therefore
The area left to build represent the fraction 1/12 of the total area
so
[tex](\frac{1}{12})\frac{704}{5} =\frac{704}{60}\ m^{2}[/tex]
Need help please asp thank you so much
Answer:
x = -1, 3
Step-by-step explanation:
so what you need to do is graph each one because that's what the questions ask. One way for you to check your answer is to set the two equations equal to each other.
-x + 5 = x^2 - 3x + 2
you want to end up with one equation and having the equation equal 0. So add x to both sides to cancel out the x on the left side and then subtract 5 from both sides to cancel out the 5 on the left side.
0 = x^2 - 2x - 3
now you factor
0 = (x - 3) (x + 1)
x = -1, 3
For the following question, find the value of the variable(s). If your answer is not an integer, leave it in simplest radical form. Please help!!
Answer:
option(D)
x= 30 , y = 10√3
Step-by-step explanation:
Given in the question, a right angle triangle whose
hypotenuse = 20√3
We will use pythagorus theorem and trigonometry identities to find the value of x and y
Formula to use
sinФ = base / hypotenusesin(30) = y / 20√3
y = sin(30) x 20√3
y = 10√3
hypotenuse² = base² + height²
(20√3)² = (10√3)² + x²
(20√3)² - (10√3)² = x²
x² = 900
x = √900
x = 30
so, the value of x = 30 and y = 10√3
Answer:
[tex]x=30,y=10\sqrt{3}[/tex]
Step-by-step explanation:
Recall the mnemonics SOH CAH TOA.
We use the cosine ratio to find the value of [tex]x[/tex].
[tex]\cos(30\degree)=\frac{Adjacent}{Hypotenuse}[/tex]
This implies that;
[tex]\cos(30\degree)=\frac{x}{20\sqrt{3}}[/tex]
[tex]\frac{\sqrt{3}}{2} =\frac{x}{20\sqrt{3}}[/tex]
Cross multiply to get;
[tex]2x=20\sqrt{3}\times \sqrt{3}[/tex]
[tex]2x=60[/tex]
[tex]x=30[/tex]
Using the sine ratio
[tex]\sin(30\degree)=\frac{y}{20\sqrt{3} }[/tex]
[tex]\frac{1}{2}=\frac{y}{20\sqrt{3} }[/tex]
Tis implies that;
[tex]y=\frac{1}{2} \times 20\sqrt{3}[/tex]
[tex]y=10\sqrt{3}[/tex]
The correct choice is D.
Kelly paid $54.60 for a bike helmet that was 20% off the original price. What was the original price
The original price of the bike helmet was $68.25, calculated by understanding that the $54.60 Kelly paid represented 80% of the original price after a 20% discount.
Explanation:Kelly paid $54.60 for a bike helmet that was 20% off the original price. To find the original price of the helmet, we need to understand that the price Kelly paid is 80% of the original price, after the discount was applied. Therefore, the equation to find the original price (OP) is:
54.60 = 0.80 × OP
To solve for OP, we divide both sides of the equation by 0.80:
OP = 54.60 / 0.80
OP = $68.25
Thus, the original price of the bike helmet was $68.25.
Evaluate the log without a calculator ( Show your work )
Look at image. That is the problem.
Answer:
8
Step-by-step explanation:
Given in the question a logarithm expression
[tex]125^(log_{5}2)[/tex]
We will use Exponent of Log Rule
[tex]b^(log_{b}k) = k[/tex]
here b = 5
k = 2
Suppose
[tex]125^(log_{5}2) = x[/tex]
take cube root on both sides of this equation
[tex]\sqrt[ 3]{(125^(log_{5}2)}=\sqrt[3]{x}[/tex]
[tex]\sqrt[3]{(125)} ^(log_{5}2)=\sqrt[3]{x}[/tex]
[tex]5^(log_{5}2)}=\sqrt[3]{x}[/tex]
Now according to the rule
2 = ∛x
to remove cube root take cube on both side
x = 8
so [tex]125^(log_{5}2 )[/tex] = 8
1 liter equals approximately 1.05 quarts. Which BEST approximates the number of liters in 3 quarts?
A) 3 liters
B) 6 liters
C) 9 liters
D) 12 liters
Answer:should be A
Step-by-step explanation:
I dunno
Answer:
it is A i just did it and i got it right so please trust me it is A
Step-by-step explanation:
Liam is a tyre fitter it takes him 56 minutes to fit 4 tyres to a van how long would it take to fit 12 tyres to 3 vans
Answer:
168 minutes, or 2 hours, 48 minutes
Step-by-step explanation:
Set up a proportion and solve.
56 minutes is to 4 tires as 'x' minutes are to 12 tires
becomes
56/4 = x/12 solve for x...
[56(12)]/4 = x (multiply both sides by 12 to get rid of the fraction)
672/4 = x (simplify 52(12) = 672)
168 = x (simplify 672/4 = 168)