Mathematics, 30.11.2021 20:50 Syaralopez

14) A water pipe can fill an empty pool in 3 hours. When the pool is full, an open drain can empty the pool in 4 hours. Using the water pipe with the drain open, how many hours will it take to fill the empty pool

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14) A water pipe can fill an empty pool in 3 hours. When the pool is full, an open drain can empty t...