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Pipes and Cisterns - Data Intensity 1 :: Discussion
| 7. | One top can fill a cistern in 2 hours and another can empty the cistern in 3 hours. How long will they take to fill the cistern if both the taps are opened? | |
| A. | 5 Hours | |
| B. | 6 Hours | |
| C. | 7 Hours | |
| D. | 8 Hours | |
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