An inlet pipe can fill an empty tank in 120 hours while an o

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An inlet pipe can fill an empty tank in 120 hours while an outlet pipe drains a completely-filled tank in 54 hours. If 8 inlet pipes and 3 outlet pipes are opened simultaneously, when the tank is empty, then in how many hours will the tank get completely filled?

[SSC CGL 20 July 2023 Shift 1 With Answers]

A

72

B

90

C

81

D

96

EXPLANATION

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