A tap can fill a bunker in 4 hours. After half the bunker is filled, three more similar tap are opened. What isthe total time taken to fill the bunker completely?

A tap can fill a bunker in 4 hours. After half the bunker is filled, t

1.	A tap can fill a bunker in 4 hours. After half the bunker is filled, three more similar tap are opened. What isthe total time taken to fill the bunker completely?
A.	3 hrs
B.	5 hrs
C.	2.5 hrs
D.	4.2 hrs
Answer» D. 4.2 hrs

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A tap can fill a bunker in 4 hours. After half the bunker is filled, three more similar tap are opened. What isthe total time taken to fill the bunker completely?

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