7 indian and 4 chinese finish a job in 5 days. 7 japanese and 3 chinese finish the same job in 7 days. given that the efficiency of each person of a particular nationality is same but different from others.one chinese,one indian and one japanese will complete the work in

Answers

Answer 1
the answer is
20 7/12

Answer 2

The question is about work and efficiency and requires solving a system of equations to find the individual work rates of people from different nationalities. However, because we have insufficent data (two equations but three unknowns), we cannot find a unique solution and thus can't determine how long it would take for one Chinese, one Indian, and one Japanese to complete the work together.

The student's schoolwork question involves solving a problem related to work and efficiency, which is a part of mathematics, specifically related to rate and work problems.

First, let's find the rate of work done by individuals from each nationality. We can set up the equations based on the given information:

Let's denote the efficiency of one Indian as I, one Chinese as C, and one Japanese as J.According to the given information:
7I + 4C = 1/5 (since 7 Indians and 4 Chinese finish the job in 5 days)7J + 3C = 1/7 (since 7 Japanese and 3 Chinese finish the job in 7 days)

We will need to solve this system of equations to find the individual efficiencies I, C, and J. However, we have two equations and three unknowns, so we cannot find unique solutions for I, C, and J unless we have one more equation or information.
Since we cannot determine the individual efficiencies with the given information, we cannot determine how long it would take one Chinese, one Indian, and one Japanese to complete the work.


Related Questions

A box of 21 holiday cards sells for $3.99. What is the unit price per card?

Answers

The unit price is about $0.19 per card.
It would be .19 Each card.

Find 3 consecutive integers whose sum is 180

Answers

60. 60 + 60 + 60 = 180.
x + (x+1) + (x+2) + (x+3) = 180
4x + 6 = 180
4x = 174
x = cannot be an even integer
If they were consecutive even integers,
x + (x+2) + (x+4) + (x+6) = 180
4x + 12 = 180
4x = 168
x = 42, 44, 46, 48

Factor 4x^2+8x-21 completely

Answers

4x^2 + 8x - 21 =
(2x - 3)(2x + 7) <==
4x^2+8x-21

4x^2-6x+14x-21

2x(2x-3)+7(2x-3)

(2x+7)(2x-3)


SOMEONE, PLEASE HELP URGENTLY <3
What shape is generated when rectangle ABCD is rotated around the horizontal line through D and A?
A. Prism
B. Pyramid
C. Cone
D. Cylinder

Answers

The answer I came up with is D a cylinder
I came up with...
D. cylinder.

a set of data can have no mode true or false

Answers

If there is NO data value or data values that occur most frequently, we say that the set of data values has no mode.

True, A set of data can indeed have no mode. In statistics, the mode represents the value(s) that appear most frequently in a dataset.

However, there are scenarios where no value occurs more frequently than others, resulting in a lack of a mode. This can happen in several situations. For example, in a uniform distribution where all values occur with equal frequency, or in a dataset with no repetition of values (each value occurs only once). Additionally, if the data is continuous and does not have distinct categories or intervals, it may not have a mode. In summary, while a mode is a common descriptive statistic, it's not a requirement for every dataset, and some datasets do indeed have no mode.

Best Answer Gets Brainliest

The double box-and-whisker plot represents the runs scored per game by two softball teams during a 32-game season. a. Which team is more consistent at scoring runs? Explain. b. In how many games did Team 2 score 6 runs or less? c. Team 1 played Team 2 once during the season. Which team do you think won? Explain. d. Which team do you think has the greater mean? Explain

Answers

A. Team 2 because the data is spread across the line and has a higher end point.
B. 4 games
C. Team 2 because they have the higher batting average.
D. Team 1 has the greater mean because team 1 has a mean of 9 and team 2 has a mean of 5.

Answer its,    C and standard deviation,  lowest  

Step-by-step explanation:

After 4 months of living in her dorm room, Molly had 5 fish. Eight months later, Molly still had 5 fish. Which of the graphs below models Molly's fish population?

Answers

i dont know need graph examples to find out 

What is the slope of the line represented by the equation y = – 2/3- 5x?

A. -5
B. -2/3
C.2/3
D. 5


PLS HELP TY

Answers

Answer:

Option A The slope of the line is [tex]-5[/tex]

Step-by-step explanation:

we know that

The equation of the line into slope intercept form is equal to

[tex]y=mx+b[/tex]

where

m is the slope

b is the y-intercept

we have

[tex]y=-\frac{2}{3}-5x[/tex]

Rewrite

[tex]y=-5x-\frac{2}{3}[/tex]

therefore

[tex]b=-\frac{2}{3}[/tex] -----> the y-intercept

[tex]m=-5[/tex] ------> slope


what does coplanar mean

Answers

Salutations!

What does coplanar mean?

Coplaner is a term used in geometry referring as points which rest on the very same plane; typically orbiting the same way. The point can be rested as 3 or several points in the same plane.

Hope I helped :D
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