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5 September, 08:03

a jar contains n nickels and d dimes. there are 17 coins in the jar, and the total value of the coins is $1.10. How many nickels and how many dimes are in the jar?

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  1. 5 September, 08:24
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    Step-by-step explanation:

    n + d = 17

    5n + 10d = 110

    Solve the system of equations using substitution or elimination. Using substitution:

    5n + 10 (17 - n) = 110

    5n + 170 - 10n = 110

    60 = 5n

    n = 12

    d = 5

    There are 12 nickels and 5 dimes.
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