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24 February, 04:36

Wilma and Betty - Two neighbors, Wilma and Betty, each have a swimming pool. Both Wilma's and Betty's pools hold 10500 gallons of water. If Wilma's garden hose fills at a rate of 700 gallons per hour while Betty's garden hose fills at a rate of 400 gallons per hour, how much longer does it take Betty to fill her pool than Wilma? It takes Betty hours and minutes longer to fill her pool than Wilma.

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  1. 24 February, 04:59
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    11 hours 15 mins

    Step-by-step explanation:

    Wilma & Betty both have a pool that holds 10500 gallons of water each.

    Wilma's garden hose fills at the rate of 700 gallons per hour.

    Betty's garden hose fills at a rate of 400 gallons per hour.

    Volume = Rate * time

    Time = Volume / rate

    The time it will take for Wilma's pool to be filled = 10500/700

    = 15 hours

    The time it will take for Betty's pool to be filled = 10500/400

    = 26.25hours

    = 26 hours 15 minutes

    it will take Betty (26.25 - 15) to fill her pool than Wilma.

    = 11.25hours

    = 11 hours 15 mins
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