If 5 men and 2 boys working together, can do four times as much work per hour as a man and a boy together. Find the ratio of the work done by a man and that of a boy for a given time?	Choose the correct choice from the following answers:  A) 3:2  B) 2:1  C) 3:3  D) 1:2  E) 6:1
2:1   2:1   5M + 22:1 = 4(1M + 12:1)   5M + 22:1 = 4M + 42:1   1M = 22:1   The required ratio of work done by a man and a boy = 2:1
<result>B</result>
If 5 men and 2 boys working together, can do four times as much work per hour as a man and a boy together. Find the ratio of the work done by a man and that of a boy for a given time?