Pipes P and Q can empty a tank in 1 hr and 1.5 hrs respectively. Pipes R and S can fill a tank in 2 hrs and 2.5 hrs respectively. The tank is filled to its capacity of 15 liters and all

Pipes P and Q can empty a tank in 1 hr and 1.5 hrs respectively. Pi

1.	Pipes P and Q can empty a tank in 1 hr and 1.5 hrs respectively. Pipes R and S can fill a tank in 2 hrs and 2.5 hrs respectively. The tank is filled to its capacity of 15 liters and all
A.	7 liters
B.	5 liters
C.	3.5 liters
D.	2.5 liters
Answer» D. 2.5 liters

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Pipes P and Q can empty a tank in 1 hr and 1.5 hrs respectively. Pipes R and S can fill a tank in 2 hrs and 2.5 hrs respectively. The tank is filled to its capacity of 15 liters and all

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