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20 October, 19:47

Nathan wants to buy a sweatshirt and is trying to determine the better buy. He has a 3030 % coupon for the in-store purchase. The store charges $3838 for the sweatshirt he wants. However, he found the same sweatshirt online for $3434 and gets 2525 % off as a first-time buyer. There are no shipping charges. Which is the better buy? By how much? Use the Polya problem solving method to solve this problem.

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  1. 20 October, 23:35
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    It is better online, for 1.1 dollars

    Explanation:

    Do you understand all the words used in stating the problem?

    Yes.

    What are you asked to find or show?

    The differnece in price bewtween the store T-shirt and the On-line T-shirt

    Can you restate the problem in your own words?

    Nathan can purchase a Tshirt by $38 with 30% discount or $34 with 25% discount. Which is the cheapest option?

    Is there enough information to enable you to find a solution?

    Yes, we have the list price for both T-shirt and the discount on each one.

    Devise a plan:

    Use a formula

    list price less discount = net cost

    We will calculate the net cost for the T-shirt

    in-store purchase scenario

    $38 - 30% coupon = 26.6 dollars

    on-line purchase scenario

    $34 - 25% off = 25,5‬ dollars

    The difference will be:

    $26.6 - $25.5 = 1.1 dollar in favor of the online purchase
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