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16 September, 00:55

Olivia had 176 books and Dawn had 80 books. After each of them donated an equal number of books to an orphanage, Olivia had 5 times as many books as Dawn left. How many books did each of them donate?

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  1. 16 September, 01:06
    0
    They each donated 56 books

    Step-by-step explanation:

    O = 176

    D = 80

    O - a = 5 (D - a)

    176 - a = 5 (80 - a)

    176 - a = 400 - 5a

    4a = 224

    a = 56
  2. 16 September, 02:07
    0
    Each person donated 56 books.

    Step-by-step explanation:

    Let d represent the # of books donated by each person. Then:

    in Olivia's case, 176-d = 5 (80-d). Then 176-d = 400 - 5d.

    Solving for d: 4d = 224, and d = 56.

    Each person donated 56 books.
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