MCQOPTIONS
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| 1. |
Three pipes A, B and C can fill a tank in 30 min, 20 min and 10 min, respectively. When the tank is empty, all the three pipes are opened. If A, B and C discharge chemical solution P, Q and R respectively, then the part of solution R in the liquid in the tank after 3 min is ? |
| A. | 8/11 |
| B. | 5/11 |
| C. | 6/11 |
| D. | 7/11 |
| Answer» D. 7/11 | |