Three taps A, B and C can fill a tank in 20, 24 and 30 minutes respect – McqOptions

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1.	Three taps A, B and C can fill a tank in 20, 24 and 30 minutes respectively. How long (in minutes) would the three taps take to fill the tank if all of them are opened together?
A.	4
B.	8
C.	12
D.	7
Answer» C. 12

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