Mathematics, 21.08.2020 08:01, Dweath50

Donald has a bunch of nickels and dimes in his piggy bank. There are 100 coins in the bank that make a total of $6.60 in change. If n is the number of nickels and d is the number of dimes, how many of each type of coin does Donald have?

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Donald has a bunch of nickels and dimes in his piggy bank. There are 100 coins in the bank that make...