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25 June, 00:18

You go to the electronics store to buy 3 CDs. Each CD's original cost is $9.99. You have a coupon for 10% off and the sales tax is 6%. What is your total purchase cost?

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Answers (2)
  1. 25 June, 00:36
    0
    9.99x3x (1+6%) = $28.5913
  2. 25 June, 00:38
    0
    The answer is: 28.59

    Solution:

    Total cost before tax and discount:

    9.99 x 3 = 29.97

    total discount:

    29.97 x 0.10 = 2.997

    total cost - discount:

    29.97-2.997=26.973

    Tax:

    26.973 X 0.06 = 1.61838

    Total cost plus tax:

    26.973 + 1.61838 = 28.59138 round to only 2 decimals: 28.59
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