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something 18 dollars and its 30 percent off

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Investing

Your cost would be $12.60edit: John W. your answer is making my head spin. Too convoluted!!!

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    By´╝Üsleepingliv

    Your cost would be $12.60

    edit: John W. your answer is making my head spin. Too convoluted!!!

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  1. John W on Jul 24, 2012 Reply

    The phrase per cent literally means of a hundred therefore something that normally costs $18 is:

    $18 * ( 1 – 30 / 100 )

    Which of course is:

    $18 * 0.70 = $12.60

    In some countries, a 30% off sale would be advertised as 7 for 0.7 * the original price. You would think that this calcula

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