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21 January, 19:17

Kelli had $2.25 in dimes and nickels. She had 4 times as many dimes as nickels. How many dimes does Kelli have?

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  1. 21 January, 20:54
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    A).05n +.10d = 2.25

    B) 4n = d

    Multiplying A) by 10

    A).5n + d = 22.50 then adding it to B)

    B) 4n - d = 0

    4.5n = 22.50

    n = 22.50 / 4.50

    n = 5

    d = 20

    5 nickels (25 cents) + (20 dimes) = 2.25

    correct!
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