Time Work

A and B together can complete a piece of work in 35 days while A alone can complete the same work in 60 days. B alone will be able to complete the same working in

  1. 74 days
  2. 80 days
  3. 84 days
  4. 90 days

Answer

(A + B)’s one day work = 1/35

A’s one day work = 1/60

B’s one day’s work = (A + B)’s one days work - A’s one day’s work

1/35 - 1/60 = 1/84

The correct option is C.