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Math Help - ratio and proportion.

  1. #1
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    ratio and proportion.

    Another question I am stumped on. An explanation would be appreciated.
    Question:

    Public swimming pools require 3 parts chlorine liquid and 2 parts salt water to every 100 parts water to kill bacteria. How much chlorine liquid is required in a 4000L pool?
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  2. #2
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    3 parts chlorine in a 105 part solution.

    The fraction of chlorine liquid is \frac{3}{105}

    The chlorine amount in 4000L is the chlorine liquid fraction of that.
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  3. #3
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    Quote Originally Posted by Archie Meade View Post
    3 parts chlorine in a 105 part solution.

    The fraction of chlorine liquid is \frac{3}{105}

    The chlorine amount in 4000L is the chlorine liquid fraction of that.
    ok I got it now, I was using 3/100 rather than 3 /105. Thanks!
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