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1. |
Q: A and B can do a piece of work in 28 and 35 days respectively. They began to work together but A leaves after sometime and B completed remaining work in 17 days. After how many days did A leave? |
A. | 8 |
B. | 7 |
C. | 14 |
D. | 9 |
Answer» B. 7 | |