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29 October, 05:13

Rhianna has $5.25 in dimes and nickels for a total of 63 coins. How many dimes does she have?

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  1. 29 October, 06:06
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    n + d = 63

    5N + 10d = 525

    5n (63-d) + 10d = 525

    315-5d+10d=525

    5d=210

    d=42

    n = 63-42 = 21

    Check 42 x. 10 = 4.20, 21 x. 05 = 1.05. 4.20 + 1.05 = 5.25
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