MCQOPTIONS
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MCQOPTIONS
| 1. |
Q: Three taps P, Q and R can fill a tank in 12 hrs, 15 hrs and 20 hrs respectively. If P is open all the time and Q and R are open for one hour each alternately, starting with Q, then the tank will be full in how many hours ? |
| A. | 9 hrs |
| B. | 7 hrs |
| C. | 13 hrs |
| D. | 11 hrs |
| Answer» C. 13 hrs | |