Pipe A can fill a tank at the rate of 10 liters/minute while B can fill the same tank in 15 minutes. A and B together can fill the empty tank in 12 minutes. Find the capacity of the tank (in liters).
Explanation:
Let the volume of the tank be V liters.
Efficiency of Pipe A = 10 liters/minute.
Efficiency of Pipe B = V/15 liters/minute.
Combined efficiency of Pipes A and B = V/12 liters/minute.
⇒ 10 + V/15 = V/12
⇒ 10 = V/60
⇒ V = 600 liters
Hence, 600.
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