8 men and 2 boys working together can do 4 times as much work as a man and a boy . working capacity of man and boy is in the ratio
explanation : let 1 man 1 day work = x 1 boy 1 day work = y then 8 x + 2 y = 4 ( x + y ) = > 4 x = 2 y = > x / y = 2 / 4 = > x : y = 1 : 2 option a
divide(subtract(4, 2), subtract(8, 4))