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lavere has sixty-one coins, all of which are dimes and quaters. if the total value of the coins is $9.85, how many of each kind of coins has she?

  • math -

    Let the two numbers of coins be D and Q.
    Solve this pair of equations:
    D + Q = 61
    10D + 25Q = 985 (total number of cents)
    10D + 10 Q = 610
    15 Q = 375
    Q = ?
    Take it from there

  • math -

    Q=25

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