Multiple choice general knowledge

If 12 men can finish a work in 20 days, then in how many days 15 men will complete that work?

  1. 22

  2. 18

  3. 16

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is an inverse proportion problem: more men means fewer days. Total work = 12 men × 20 days = 240 man-days. With 15 men: 240/15 = 16 days. Option C is correct.

AI explanation

To solve this problem, we can use the concept of man-days of work.

Given that 12 men can finish the work in 20 days, we can calculate the total man-days required to complete the work.

Man-days = (Number of men) x (Number of days) = 12 x 20 = 240

Now, we need to find out how many days it will take for 15 men to complete the work.

Number of days = (Total man-days) / (Number of men) = 240 / 15 = 16

Therefore, 15 men will complete the work in 16 days.

The correct answer is C) 16.

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