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29 September, 19:11

A jar contains n nickels and d dimes. There are 30 coins in the jar, and the total value of the coins is $2.20. How many nickels and how many dimes are in the jar?

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  1. 29 September, 22:43
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    16 Nickles and 14 Dimes

    Step-by-step explanation:

    What we know

    n + d = 30.05n +.1d = 2.2 (total change equals $2.20) (.05n + 0.1d = 2.2) - 10 -.5n - d = - 22.5n = 8 n = 16
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