Multiple choice

If 15 men and 21 boys can do a piece of work in 6 days, 18 men and 24 boys can do it in 4 days, then the ratio of daily work done by a man to that of a boy is

  1. 3:2

  2. 4:6

  3. 5:3

  4. 4:3

  5. N/A
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Work done by 15 men + 21 boys in 6 days = work done by 18 men + 24 boys in 4 daysOr 90 M + 126B = 72M + 96 B18M = 30 B3M = 5BM/B = 3/5Ratio of work one by a man to that of a boy = 5:3

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