Question

) 5 men and 2 boys working together can do four times as much work as a man and a boy.

Working capacities of a man and a boy are in the ratio :​

Answer 1

capacity of boy = x

capacity of man = y

capacity of 5 men and 2 boys = 5x +2y

5x + 2y = 4x + 4y

x = 2y

thais shows that working capacity of boy and man are in ration of: 1:2

Answer 2

Answer:

Step-by-step explanation:

5 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

1:2

1:3

2:1

2:3

Answer: Option C

Explanation:

Let 1 man 1 day work = x

1 boy 1 day work = y

then 5x + 2y = 4(x+y)

=> x = 2y

=> x/y = 2/1

=> x:y = 2:1