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It takes 4men 6hours to repair a road how long will it take 8men to do the job if they work at the same rate? What is asked in the problem? What are given in the problem? Write the equation Write the solution What is the final answer?​ ​



para lang po sa test(≧▽≦)


Sagot :

Answer:

What is asked in the problem?

The time 8 men to do the job at the same rate.

What are given in the problem?

4 men repairing a road in 6 hours

Write the equation Write the solution.

=============  Using Unit Analysis =============

4 man * 6 hours = 24 man-hours

In the same rate of 24 man-hours, how long does it take for 8 men to repair the road.

Let h = hours

8 man * h = 24 man hours

8h = 24

h = 24/8

h = 3 hours

============= Using ratio and proportion ===============

The number of men (x) varies indirectly to the hours (y) for the job to be done.

If x = 4, then y=6      or m=4, then h=6

x = k/y

4 = k / 6

24 = k

If x = 8, y = ?

x = k/y

8 = 24 / y

y = 24/8

y = 3 hours

What is the final answer?​ ​

It will take 3 hours for 8 men to do the same job at the same rate.

✏️ Question

====================================

It takes 4men 6hours to repair a road how long will it take 8men to do the job if they work at the same rate?

What is asked in the problem?

What are given in the problem?

Write the equation Write the solution.

What is the final answer?

====================================

✏️ Answer

====================================

It takes 4men 6hours to repair a road how long will it take 8men to do the job if they work at the same rate?

What is asked in the problem?

The time of 8 men to do the job if they work at the same rate.

What are given in the problem?

4 men, 6 hours and 8 men

Write the equation Write the solution.

Unit Analysis

4 men = 6 hours

8 ÷ 4 = 2

6 ÷ 2 = 3

What is the final answer?

3 hours is the time of 8 men to do the job if they work at the same rate.