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Pipe A can fill a tank in 12 hours and Pipe B can empty it in 20 hours · If both are opened simultaneously, how long will it take to fill the tank?
30 hours
25 hours
35 hours
40 hours
30 hours
Practice and solve "Pipe A can fill a tank in 12 hours and Pipe B can empty it in 20 hours · If both are opened simultane..." for RRB JE CBT-1 - Mathematics · The correct answer is Option A: 30 hours · Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.
Practice and solve "Pipe A can fill a tank in 12 hours and Pipe B can empty it in 20 hours · If both are opened simultane..." for RRB JE CBT-1 - Mathematics · The correct answer is Option A: 30 hours · Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.