llcoolanaswerne1654 llcoolanaswerne1654
  • 10-10-2017
  • Mathematics
contestada

Pump a can empty a pool in 20 hours and pump b can empty it in 24 hours. working together, how long

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daint20
daint20 daint20
  • 10-10-2017
I would guess 4 hours in that case
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