A and B can finish a piece of work in 16 days and 12 days respectively. A started the work and worked at it for 2 days.He was then joined by B.Find the total time taken to finish the work.

Answer 1

A work/day = 1/16
B work/day = 1/12

2(1/16) + x(1/16 +1/12) = 1

Answer 2

8 days