Multiple choice

If 36 men can do a piece of work in 25 days, in how many days will 15 men do it?

  1. 40 days

  2. 50 days

  3. 55 days

  4. 60 days
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is an inverse proportion problem - fewer workers means more days. The total work is constant at 36 × 25 = 900 man-days. With only 15 men, divide 900 by 15 to get 60 days. Think of it as redistributing the same total work across fewer people.

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