Multiple choice

12 men complete a work in 20 days If only 8 men are emplited, then the time required to complete the same work is

  1. 24days

  2. 25days

  3. 30days

  4. 35days
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is an inverse proportion problem. The total work is 12 men * 20 days = 240 man-days. If 8 men are employed, the time required is 240 / 8 = 30 days.

AI explanation

Using the formula M1 x D1 = M2 x D2, we substitute the values as 12 x 20 = 8 x D2. Solving for D2 gives 240 divided by 8, which equals 30 days.

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