Two pipes can fill an empty tank in 10 and 15 hrs respectively. If waste pipe C is opened both A and B together can fill the tank in 5 hours. The waste pipe can empty the full tank in

Two pipes can fill an empty tank in 10 and 15 hrs respectively. If was

1.	Two pipes can fill an empty tank in 10 and 15 hrs respectively. If waste pipe C is opened both A and B together can fill the tank in 5 hours. The waste pipe can empty the full tank in
A.	30 hrs
B.	50 hrs
C.	60 hrs
D.	40 hrs
Answer» B. 50 hrs

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Two pipes can fill an empty tank in 10 and 15 hrs respectively. If waste pipe C is opened both A and B together can fill the tank in 5 hours. The waste pipe can empty the full tank in

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