Multiple choice general knowledge math & puzzles

36 men can complete a piece of work in 18 days. In how many days will 27 men complete the same work?

  1. 12

  2. 18

  3. 22

  4. 24

  5. None of these

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is an inverse proportion: (Men1 * Days1) = (Men2 * Days2). 36 * 18 = 27 * Days2. Days2 = (36 * 18) / 27. Dividing 18 and 27 by 9 gives (36 * 2) / 3 = 12 * 2 = 24 days.