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11 February, 08:19

Working together, two pumps can drain a certain pool in

6

hours. If it takes the older pump

14

hours to drain the pool by itself, how long will it take the newer pump to drain the pool on its own?

+4
Answers (1)
  1. 11 February, 08:49
    0
    New pump = (Old Pump * Total) / (Old Pump - Total)

    New pump = (14 * 6) / (14 - 6)

    New pump = (84) / (8)

    New Pump = 10.5 hours
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