MCQOPTIONS
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MCQOPTIONS
| 1. |
One pipe can fill an empty tank in 3 hours, two drawn pipes can empty a full tank in 6 hours and 10 hours respectively, if all three pipes are opened together in the empty tank, how much time will it take to fill the tank? |
| A. | 23 hours |
| B. | 45 hours |
| C. | 90 hours |
| D. | 15 hours |
| Answer» E. | |