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Pipes A and B can fill an empty cistern in 20 min and 35 min, respectively. Both Pipe A and Pipe B are opened together. After how much time should Pipe A be turned off so that the empty cistern is completely filled in a total of 28 min?
5 min
20 min
4 min
10 min
4 min
Practice and solve "Pipes A and B can fill an empty cistern in 20 min and 35 min, respectively. Both Pipe A and Pipe B a..." for Mathematics - Previous Year Paper 2024. The correct answer is Option C: 4 min. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.
Practice and solve "Pipes A and B can fill an empty cistern in 20 min and 35 min, respectively. Both Pipe A and Pipe B a..." for Mathematics - Previous Year Paper 2024. The correct answer is Option C: 4 min. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.