If 8 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:
A) 3:2
B) 2:1
C) 3:3
D) 1:2
E) 6:1
8M + 2B = 4(1M + 1B)   8M + 2B = 4M + 4B   4M = 2B   The required ratio of work done by a man and a boy = 2:4=1:2   1:2
<result>D</result>
If 8 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?