Pump A delivers water at a rate 4 times that of pump B. If both pumps operate together, a tank with a capacity of 15000L can be filled in 20 minutes. Find the pumping rate of pump A in litres per minute. A) 750L/min
B) 600L/min
C) 450L/min
D) 150L/min

addition

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where is the gragh

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the equation is not included but the answer is (1.50, 2.00, 2.75)

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