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    sumreen's Avatar
    sumreen Posts: 1, Reputation: 1
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    #1

    Jan 21, 2012, 10:51 PM
    Solution X is 15% salt and the rest is water. Solution Y is 8% salt and the rest is w
    Solution X is 15% salt and the rest is water. Solution Y is 8% salt and the rest is water. How many litres of solution X need to be added to 5 litres of solution Y to make a solution that is 10% salt?
    Aurora2000's Avatar
    Aurora2000 Posts: 111, Reputation: 16
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    #2

    Jan 22, 2012, 06:02 AM
    In 5 litres of solution Y you have 5*8%=0.4 litres of salt, and the rest 4.96 litres of water.
    Now you add t litres of solution X (t to be determined). This contains t*15% litres of salt, and t*85% of water.

    The total (t litres of solution X plus 5 litres of solution Y) contain t*15%+0.4 litres of salt, and you want it being 10%. Thus solve
    .
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