# In How Many Days A and B can Do Finish Work? If

A, B and C can do a job in 6 days, 12 days and 15 days respectively. After 1/8 of the work is complete, C leaves the job. Rest of the work is done by A and B together. Time taken to finish the work is

- 35/6 days
- 21/4 days
- 7/2 days
- 15/4 days

**Answer: (3) 7/2 days**

**Explanation:-**

A can do a job = 6 days.

B can do the same job = 12 days.

C can do the same job = 15 days.

1/8 of the work is complete.

Then, remaining work = 1 – 1/8 = 7/8

A and B can work in a day = 1/6 + 1/12

= (2 + 1)/12 = 3/12 = 1/4

Therefore, A and B can complete the work = 4 days.

Remaining work can complete the work by A and B = 7 x 4/8 = 7/2 days.

Hence, the answer is (3) 7/2 days.