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30 July, 18:25

Emilio had $150 on a gift card he used the gift card to purchase 8 dvds. adam had $175 on a gift card and used the gift card to purcahse 10 of the same dvds that emilio purchased. they both have the same amount left on their gift card.

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  1. 30 July, 18:46
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    150 - 8d = 175 - 10d

    -8d + 10d = 175 - 150

    2d = 25

    d = 25/2

    d = 12.5 ... so each dvd costs 12.50

    150 - 8 (12.5) = 150 - 100 = 50

    175 - 10 (12.5) = 175 - 125 = 50

    so they will each have 50 bucks left on their card
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