GAT Subject
Engineering
Computer Science Civil Engineering Chemical Engineering Agricultural Engineering Mechanical Engineering Electronics and Communication
6. | A and B can together do a piece of work in 15 days. B alone can do it in 20 days. In how many days can A alone do it ? | |
A. | 40 days | |
B. | 50 days | |
C. | 60 days | |
D. | 70 days | |
Answer: Option C | |
Explanation: | |
(A+B)’S 1 day’s work = [1/15−1/20]=1/60 |
|
Tutorial Link: |