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 20%

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.	0 min
B.	00 min
C.	0 min
D.	5 min
Answer» D. 5 min