Question

If 20 men can build a wall in 9 working days. How long will it take 15 men to build a
similar wall, if working at the same rate?

Answer 1

Answer:

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Answer 2

Given,

20 men can build the wall in 9 working days.

To find,

Time taken by 15 men to build the wall, if working at same rate.

Solution,

We can simply solve this mathematical problem by using the following mathematical process.

Here, we have to use normal arithmetic method :

So,

20 men can build the wall in = 9 days

1 man can build the wall in = (20×9) days

15 men can build the wall in = {(20×9)/15} = 12 days

(This will be considered as the final result.)

Hence, 15 men will take 12 days to build the wall.