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lara arranged the books in her bookshelf by size. 2/10 of the books were tall and 1/2 of the books were medeium sized. If 12 of the books were small, how manyu total books did she arrange?

  • math -

    2/10 + 5/10 = 7/10

    (3/10)x = 12
    x = 12/(3/10)
    x = 12 * (10/3)
    x = 120/3
    x = ?

  • math -

    could you please explain how you got 5/10 and 3/10?

  • math -

    1/2 = 5/10

    10/10 - 7/10 = 3/10

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