Question

A and b together can complete a work in 12 days while a and c together can complete a work in 20 days b and c together can complete a work in 15 days.How many more days does c takes, than a to complete the work.

Answer 1

a+b =12

a+c =20

c-b =8

b+c=15

c= 12.5

a =8.5

c-a =4 Ans