MCQOPTIONS
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| 1. |
A tank can be filled in 30 minutes. There is a leakage which can empty the tank in 90 minutes. Therefore, the tank will be filled in |
| A. | 60 min |
| B. | 45 min |
| C. | 55 min |
| D. | 50 min |
| Answer» C. 55 min | |