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Q 2335645562.     I. Pipe A can fill the tank in 30 hours when it works at 60 % of its efficiency. Pipe B is one third as efficient as pipe A. How long will it take if both the pipes operate simultaneously at their 100% efficiency.
II. 14 hours
IBPS-PO 2017 Mock Mains
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)