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QA - Placement Quizzes | Pipes and Cisterns | Question 14
Two pipes can fill a tank in 10 hours and 12 hours respectively, while third pipe empties the full tank in 20 hours. If all the three pipes operate simultaneously, in how much time the tank will be filled?
(A)
7 hr. 30 min.
(B)
7 hr. 25 min
(C)
7 hr. 40 min
(D)
7 hr. 50 min
Answer
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