Mathematics, 21.07.2019 19:00 ksanchez2100
Two water pumps are used to drain a swimming pool. pump a can drain the pool in 45 minutes, and pump b can drain the same pool in 35 minutes. how many minutes will it take to drain the pool using both pumps at the same time?
Answers: 1
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Two water pumps are used to drain a swimming pool. pump a can drain the pool in 45 minutes, and pump...
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