MCQOPTIONS
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MCQOPTIONS
| 1. |
Two taps A and B can fill a tank in 15 and 20 hours respectively. Whereas the third tap C empties the full tank in 30 hours. Initially all the three taps are opened and after 10 hours C is closed then in how much time will the tank be filled? |
| A. | 45/8 hours |
| B. | 80/7 hours |
| C. | 89/3 hours |
| D. | 90 hours |
| Answer» C. 89/3 hours | |