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?

Pipe A can fill a tank of capacity 350 liters in \(3\frac{1}{2}\) min

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

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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?

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