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29 December, 01:06

John saved 65 coins. He saved nickels and dimes only. If he had totally $4.90, how many nickels did he have?

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  1. 29 December, 01:15
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    Step-by-step explanation:

    Let n = nickels and d = dimes

    n+d = 65

    5n+10d = 490

    Solve for n:

    n = 65 - d

    Substitute the equation:

    325 + 5d = 490

    5d = 165

    d = 33
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