# How Number of Days Require to Complete the same Work? If

A competes a pipe of work in 4 days and B completes it in 6 days. If both A and B work together, then the number of days required to complete the same work is

- 19/4 days
- 13/5 days
- 12/5 days
- 17/5 days

**Answer: (3) 12/5 days
Explanation:-**

A completes piece of work = 4 days

Therefore, A can do work in a day = ¼

B completes piece of work = 6 days

Therefore, B can do work in a day = 1/6

A and B can do work together in a day = 1/4 + 1/6

(6 + 4)/24 = 10/24

= 5/12

Thus, A and B can do work complete = 12/5 days

Hence, the answer is (3) 12/5 days.