Two pipes A and B can fill a tank in 36 min and 45 min respectively. Pipe C can empty it in 30 min

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Two pipes A and B can fill a tank in 36 min and 45 min respectively. Pipe C can empty it in 30 min A and B are opened and after 7 min C is also opened. In how many minutes will the tank be full? cdspraveshsir cdspraveshsir sscmathspraveshsir ..., видео от 2025-02-05 загрузил на rutube TechToday...