Multiple choice

8 men can do a work in 12 days. After 6 days of work, 4 more men were engaged to finish the work. In how many days would the remaining work be completed ?

  1. 2

  2. 3

  3. 4

  4. 5

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

Total work = 8 men × 12 days = 96 man-days. In 6 days, 8 men complete 8 × 6 = 48 man-days. Remaining work = 96 - 48 = 48 man-days. Now 8+4 = 12 men work on remaining 48 man-days, taking 48/12 = 4 days. More men finish faster.