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March 25, 2017

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April buys 8 books for $44.1 paper back book costs$4 and 1 hard back book costs $8. how many of each did she buy? (use an equation to solve)

p ---> paperback books
h ---> hardcover books


use these equations to solve
p + h = 8
4p + 8h = 44

  • algebra - ,

    h = # of hardback books
    p = # of paperback books

    h + p = 8 = h = 8 - p

    4p + 8h = $44

    -4p - 4h = -32
    4p + 8h = 44

    4h = 12
    - -
    4 4
    h = 3

    Answer: 5 paperback books and 3 hardback books

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