Mathematics, 10.07.2019 14:30, noaheault

Ajar contains n nickels and d dimes. there are 20 coins in the jar, and the total value of the coins is $1.40. how many nickels and how many dimes are in the jar?

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Ajar contains n nickels and d dimes. there are 20 coins in the jar, and the total value of the coins...