Multiple choice

Two men or 1 woman or 3 boys can do a piece of work in 66 days. In how many days will the same piece of work be done by 1 man, 1 woman and 1 boy?

  1. 121 days

  2. 36 days

  3. 26 days

  4. 33 days

  5. -

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

2M = 1W = 3B = 1/66 work per day. So 1M = 1/132, 1W = 1/66, 1B = 1/198. 1M + 1W + 1B = (3+6+2)/396 = 11/396 = 1/36. Time = 36 days.