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  1. #1
    Silver Lounger
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    Two Hoses & A Pool

    The first hose will fill the pool in 5 hours.
    The second hose will fill the same pool in 8 hours.
    If I turn on the first hose at 1:00, what time would I need to turn on the 2nd hose if I want the pool to be filled at exactly 5:00?

    <img src=/S/dizzy.gif border=0 alt=dizzy width=15 height=15>

    Got to show your work on this one...
    - Ricky

  2. #2
    5 Star Lounger
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    Re: Two Hoses & A Pool

    <span style="background-color: #FFFF00; color: #FFFF00; font-weight: bold"> 3:24
    The 5 hour hose would fill the tank 4/5 of the way. That means the 8 hour hose has to fill the last 1/5. Since it would take the 8 hour hose 480 minutes to fill the pool it would have to contribute 480/5 or 96 minutes of fill time </span hide>

  3. #3
    Silver Lounger
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    Re: Two Hoses & A Pool

    Perfect! <img src=/S/bullseye.gif border=0 alt=bullseye width=45 height=15>

    Keep an <img src=/S/eyeout.gif border=0 alt=eyeout width=15 height=15> for an advanced, incredibly challenging version of the pool puzzle. Coming soon.
    - Ricky

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