*/*_If one pipe A can fill a tank in 20 minutes, then 5 pipes, each of 20% efficiency of A, can fill the tank in:?

*/*_If one pipe A can fill a tank in 20 minutes, then 5 pipes, each of

1.	/_If one pipe A can fill a tank in 20 minutes, then 5 pipes, each of 20% efficiency of A, can fill the tank in:?
A.	80 min
B.	100 min
C.	20 min
D.	25 min
Answer» D. 25 min

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*/*_If one pipe A can fill a tank in 20 minutes, then 5 pipes, each of 20% efficiency of A, can fill the tank in:?

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/_If one pipe A can fill a tank in 20 minutes, then 5 pipes, each of 20% efficiency of A, can fill the tank in:?