MCQOPTIONS
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MCQOPTIONS
| 1. |
A tyre has two punctures. The first puncture alone would have made the tyre flat in 9 minutes and the second alone would have done it in 6 minutes. If air leaks out at a constant rate, how long does it take both the punctures together to make it flat ? |
| A. | 3(1/5)min |
| B. | 3(2/5)min |
| C. | 3(3/5)min |
| D. | 3(4/5)min |
| Answer» D. 3(4/5)min | |