Mathematics, 22.07.2019 00:00 Kittylover4812
One pump can empty the pool in 36 hours. the second pump is twice faster. after both pumps, working together emptied 1 3 of a pool the second pump broke. the first pump finished the job. how long did it take to empty the pool?
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One pump can empty the pool in 36 hours. the second pump is twice faster. after both pumps, working...
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