9 men and 2 boys working together can do four times as much work as a man and a boy.
9 men and 2 boys working together can do four times as much work as a man and a boy. Working capacity of man and boy is in the ratio
Answer/Solution
2:5
Steps/Work
Explanation:
Let 1 man 1 day work = x
1 boy 1 day work = y
then 9x + 2y = 4(x+y)
=> 5x = 2y
=> x/y = 2/5
=> x:y = 2:5
Option D
Let 1 man 1 day work = x
1 boy 1 day work = y
then 9x + 2y = 4(x+y)
=> 5x = 2y
=> x/y = 2/5
=> x:y = 2:5
Option D