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One tap can fill a water tank in 40 minutes and another tap can make the filled tank empty in 60 minutes. If both the taps are open, in how many hours will the empty tank be filled ?
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- 2 hours
- 2.5 hours
- 3 hours
- 3.5 hours
- 2 hours
Correct Option: A
As per the given in question , we have
| Part of the tank filled when both taps are opened together = | - | = | = | ||||
| 40 | 60 | 120 | 120 |
Hence, the tank will be filled in 120 minutes or 2 hours.
