Pipes and Cistern Free Question Bank
Three pipes A, B and C can fill a tank from empty to full in 30 minutes, 20 minutes, and 10 minutes respectively. When the tank is empty, all the three pipes are opened. A, B and C discharge chemical solutions P,Q and R respectively. What is the proportion of the solution R in the liquid in the tank after 3 minutes?
A| 5 |
| 11 |
B
| 6 |
| 11 |
C
| 7 |
| 11 |
D
| 8 |
| 11 |
E NA
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