MCQOPTIONS
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| 1. |
A tank is normally filled in 8 hours but takes 2 hrs longer to fill because of a leak in its bottom. If the cistern is full, in how many hrs will the leak empty it? |
| A. | 40hrs |
| B. | 20hrs |
| C. | 25hrs |
| D. | None of these |
| Answer» B. 20hrs | |