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11 February, 05:02

A little boy saved nickels and dimes. He had 8 more nickels than dimes. The total of his money was $1.45. How many nickels and how many dimes did he have?

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  1. 11 February, 05:16
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    N=8+d

    10d+5n=145

    divide 2nd equaiton by 5 to make nicer and easier

    2d+n=29

    subsitute 8+d for n in 2nd equation

    2d+8+d=29

    3d+8=29

    minus 8 both sides

    3d=21

    divide by 3

    d=7

    sub back

    n=8+d

    n=8+7

    n=15

    15 nickles and 7 dimes
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