Question:

Judy bought a coat @ a 20% discount sale for $72. what was the original price of the coat?

by Guest57193  |  earlier

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Judy bought a coat @ a 20% discount sale for $72. what was the original price of the coat?

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  1. You know that Judy has saved 20%. In other words, the amount she paid was 80% of the whole cost.

    $72 = .8X

    (In other words, $72 equals 80 percent of the unknown original cost.)

    Now just solve for X.

    $72 / .8

    Your answer is $90.


  2. Well I'm not going to just hand over the answer!!

    I will walk you through how you can work it out for yourself though:

    The full price = 100%

    The available discount = 20% (of the original price)

    The reduced price = 80% (of the original price)

    You know, therefore, that 80% = $72

    So, if 80% = $72 ...

    1% = ? (call it x) so...

    1% = x.

    Therefore the way you work out the original price (or 100%) of the coat is to simply solve the expression 100*x (or 100 times x).

    Okay...48 hours on...have you got it yet??

    80% = $72...therefore

    1% = 72/80...so

    100% = (72/80)*100 OR 100*(72/80)

    (72/80)=0.9

    100% = 100 x 0.9

    100% = 90.

    Therefore the original cost of the coat is $90.

    @ Ellee - what you've done is to ask yourself: 'if the original price of the coat is $72 and I raised the price by 20%, how much would I then sell the coat for?'

    Your maths is right (for the question you've asked yourself) but you've answered as per a different scenario to the one posed by the original poster.

  3. 72 X 20% = 14.40

    $72 + $14.40 = $86.40

    The original price was $86.40

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