Question

A takes 10 less than B to complete the work. If both A and B together can finish the work in 12 days. Find the number of days taken by B to complete the work

Answer 1

let b takes x days

then A will take x-10 days

then when they work together

1/(x-10) + 1/x = 1/12

after solving

x=30 or x=4

so we reject x=4 since we cant subtract 10 days from it for A s.

x=30 ans