Question

20 men can construct a building in 40 days. How long will it take 10 men to do this work?

Answer 1

Step-by-step explanation:

20 men can construct a building in 40 day

1"""""""""""""""""""""""""""""""""""""""""""=40/20

10" " "=40/20×10=20 ans.

Answer 2

20 days will be taken by 10 men to do this work.

Step-by-step explanation:

Given that, 20 men can construct a building in 40 days. It is required to find how long will it take 10 men to do this work. It is based on unitary method. It is calculated as :

20 men = 40 days

1 man = (40/20) days

or

1 man = 2 days

For 10 men, number of days will be :

10 men = 2 × 10 = 20 days

So, 20 days will be taken by 10 men to do this work.

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20 men can construct a building in 40 days. How long will it take 10 men to do this work?

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