Mathematics, 20.08.2019 04:30 alexisss23
One pump fills a tank in 20 hours and another in 15 hours. when a third pump is added the tank fills in 6 hours. find out how long it takes the 3rd pump to fill the tank alone.
Answers: 1
of the tank every hour, so it takes a total of 20 hours to fill the tank alone.
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One pump fills a tank in 20 hours and another in 15 hours. when a third pump is added the tank fills...
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