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14 September, 01:57

Julia spent $50 on a book. The cost of the book was $20 less than twice what she spent on a backpack. How much did the backpack cost?

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  1. 14 September, 02:03
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    B=book

    a=backpack

    b=50

    b=2a-20

    50=2a-20

    2a=75

    a=37.5

    it cost $37.5
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