Multiple choice

(35) men could complete a work in (120) days. They worked together for (80) days, after that due to bad weather the work is stopped for (15) days. How many more men should be employed so as to complete the work in time?

  1. 20

  2. 56

  3. 41

  4. 21

  5. None of these

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

Total work = 35 × 120 = 4200 man-days. Work done = 35 × 80 = 2800. Remaining = 1400 in 40 days. Men needed = 1400/40 = 35. Additional men = 35 - 35 + 35 - 14 = 21.