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1. |
Pipe A can fill a tank of capacity 350 liters in \(3\frac{1}{2}\) minutes. Pipe B can fill a tank of capacity 780 liters in \(8\frac{2}{3}\) minutes. How long (in min) will it take to fill a tank of capacity 1615 liters, if both pipes are opened together? |
A. | \(7\frac{1}{2}\) |
B. | \(8\frac{1}{2}\) |
C. | 9 |
D. | 8 |
Answer» C. 9 | |