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Jo bought an item for 45¢, and paid with a $1.00 bill. How many different ways could she get her 55¢ change with combinations of only nickels, dimes and quarters?

  • math -

    qqn

    q ddd
    q dd nn
    q d nnnn
    q nnnnnn

    dddddn
    dddd nnn
    ddd nnnnn
    dd nnnnnnn
    d nnnnnnnnn

    nnnnnnnnnnn

    looks like 11 ways

  • math -

    11

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