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8 January, 09:16

Sonji has $5.25 in nickels and dimes. The coin value can modeled by the equation 0.10+0.05n=5.25, where d represents the number of dimes and n represents the number of nickels. If sonji has 21 dimes, how many nickels does she have?

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  1. 8 January, 09:23
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    63

    .10d +.05n = 5.25

    .10 (21) +.05n = 5.25

    2.1 +.05n = 5.25

    .05n = 3.15

    n = 3.15/.05

    n = 63
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