Question

A and B can do a job in 6 and 12 days respectively. they began the work together but A leaves after 3 days. then the total number of days needed for the completion of the work is ​

Answer 1

Answer:

Hello,

Work done by A in 1 day = 1/6

Work done by B in 1 day = 1/12

Work done by A and B in 1 day 1/6 + 1/12 = 1/4

A and B worked together for the initial 3 days = 3/4

Remaining work = 1/4

Time taken by B to complete this remaining work 1/4 / 1/12 = 3

Total number of days = 3 + 3 = 6

hope my answer is ✌️.