If 7 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 most appropriate option:
A) 3:2	B) 2:3	C) 3:3	D) 1:2	E) 6:1
2:3   2:3   7M + 22:3 = 4(1M + 12:3)   7M + 22:3 = 4M + 42:3   3M = 22:3   The required ratio of work done by a man and a boy = 2:3
<result>B</result>
If 7 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?