Mathematics, 23.04.2020 00:23, krystalruby1219

Pump 1 can emty a pool in about 8 hours while pump 2 can empty the same pool in 9 hours. If the two pumps worked together how long would it take them to empty the pool?

about 4 hours
about 4 hours and 15 mins
about 4 hours and 30 mins
about 4 hours and 45 mins

Answers: 1

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Pump 1 can emty a pool in about 8 hours while pump 2 can empty the same pool in 9 hours. If the two...