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Math Help - mark up

  1. #1
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    mark up

    The sign on a rack of sports coats reads : " All prices already marked down 30% !" What is the regular selling price of a coat marked at

    a) $ 100

    b) 196.49
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  2. #2
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    Hello, diehardmath4!

    The sign on a rack of sports coats reads: "All prices already marked down 30%!"
    What is the regular selling price of a coat marked at

    a) $100

    b) $196.49

    The sale price is 70% of the regular price: . S \:=\:0.7R

    . . Hence: . R \:=\:\frac{S}{0.7}


    a)\;\;S = \$100 \quad\Rightarrow\quad R \;=\;\frac{100}{0.7} \;\approx\;\$142.86

    b)\;\;S = \$196.49 \quad\Rightarrow\quad R \;=\;\frac{196.49}{0.7} \;=\;\$280.70

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