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23 July, 18:36

Marilyn purchased a book that had a regular price of $19. She used a coupon that reduced the regular price by 15%. Sales tax for the purchase was 6.5% of the reduced price. Marilyn paid for the purchase with a $20 bill. How much change should Marilyn receive for her purchase? Use words, numbers, or diagrams to justify your answer

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  1. 23 July, 20:10
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    2.80

    Step-by-step explanation:

    The discount is the regular price times the discount

    discount = 19 * 15%

    discount = 2.85

    The new price is the regular price minus the discount

    new price = 19-2.85

    =16.15

    Now she has to pay the sales tax

    tax = new price * tax rate

    tax = 16.15 * 6.5%

    = 16.15 *.065

    =1.05

    We add the tax to the new price to get the final price

    final price = new price+tax

    = 16.15 + 1.05

    =17.20

    She pays with a 20 dollar bill

    Change = payment - final price

    =20.00 - 17.20

    = 2.80
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