If 6 men and 2 boys working together, can do five 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 option
A) 2:5
B) 2:3
C) 2:8
D) 3:1
E) 3:2
6M + 2B = 5(1M + 1B)   6M + 2B = 5M + 5B   1M = 3B   The required ratio of work done by a man and a boy = 3:1   Answer:3:1
<result>D</result>
If 6 men and 2 boys working together, can do five 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?