Question

Some men promised to do a job in 40 days. 12 of them were absent and the remaining men did the job in 60 days. What is the original number of men?​

Answer 1

Let there be m men in the beginning, who promised to do the job in 40 days.

But 12 became absent, means the remaining (m – 12) men did the job in 60 days.

The work is same ⇒40m = 60(m – 12) ⇒40m = 60m - 720 ⇒ m = 36.Hence, answer is 36 men.

Answer 2

Answer:

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Step-by-step explanation:

Let there be m men in the beginning,

who promised to do the job in 40 days.

But 12 became absent,

means the remaining (m – 12) men did the job in 60 days.

The work is same

⇒40m = 60(m – 12)

⇒40m = 60m - 720

⇒ m = 36.

Hence, answer is 36 men.

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