Multiple choice

45 men can do a piece of work in 16 days. 6 days after starting of work 30 more men joined the work. In how many days will the remaining work be completed ?

  1. 8

  2. 3

  3. 5

  4. 10

  5. None of these
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

45 men × 16 days = 720 man-days of total work. After 6 days, work done = 45 × 6 = 270 man-days. Remaining work = 720 - 270 = 450 man-days. Now 30 more men join, so 75 men work. Days needed = 450/75 = 6 days. Total days = 6 + 6 = 12 days. Options are 8, 3, 5, 10, 'None of these' - so 'None of these' (E) is correct.

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