Question

A and b can do a piece of work 6 and 4 days respictively. A started the work worked for 2 days then was joined by



b. Find the total time taken to complete the work

Answer 1

efficiency of a and b is 2 and 3 respectively .work done by a in 2 days =2×2=4 units and the efficiency of both is 5 so the days taken= 8/5+2=18/5 days