MCQOPTIONS
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MCQOPTIONS
| 1. |
Three pipes A, B and C are available to fill a tank. The time taken to fill the tank by A is 15 hours and by B is 10 hours. The time taken to fill the tank by both A and B together is equal to the time required for C to fill it. How much time is required to fill the tank by all the three pipes together? |
| A. | 6 hours |
| B. | 3 hours |
| C. | 4 hours |
| D. | 4.5 hours |
| Answer» C. 4 hours | |