If one pipe P can fill a tank in 10 minutes, then 5 pipes, each of 20% efficiency of P, can fill the tank inA. 10 minutesB. 50 minutesC. 130 minutesD. 175 minutes

If one pipe P can fill a tank in 10 minutes, then 5 pipes, each of 20%

1.	If one pipe P can fill a tank in 10 minutes, then 5 pipes, each of 20% efficiency of P, can fill the tank inA. 10 minutesB. 50 minutesC. 130 minutesD. 175 minutes
A.	A
B.	D
C.	C
D.	B
Answer» B. D

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If one pipe P can fill a tank in 10 minutes, then 5 pipes, each of 20% efficiency of P, can fill the tank inA. 10 minutesB. 50 minutesC. 130 minutesD. 175 minutes

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