tae071 tae071
  • 20-11-2016
  • Mathematics
contestada

a small pump can drain a pool in 9 hours. a large pump could drain the same pool in 7 hours. how long will it take to drain the pool of both pumps are used simultaneously

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foureyedredhead foureyedredhead
  • 20-11-2016
3.94 hours. hope this helps.
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