Question

Twelve men are required to complete a work in 24 days. How many men are required to complete twice the work in 16 days

Answer 1

Find number of days needed if the work is twice:

12 men takes 24 days to finish the work

12 men will need (24 x 2 = 48 days) to finish twice the work.

12 men needs 48 days

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Find men needed for 1 day:

12 men : 48 days

12 x 48 men : 48 ÷ 48 day

576 men : 1 day

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Find men needed for 16 days:

576 ÷ 16 : 1 x 16 days

36 men : 16 days

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Answer: 36 men