Laren A.
asked • 02/20/19Gabys pig bank contains dimes and nickels worth $6.75. She has 90 coins in all. How many of each coin does Gaby have? Let x represent the number of dimes and let y represent the number of nickels.
Patrick B. answered • 02/20/19
Math and computer tutor/teacher
D+N = 90 ----> D = 90 - N
10D + 5N = 675
10(90 - N) + 5N = 675
900 - 10N + 5N = 675
900 - 5N = 675
-5N = -225
N = 45
45 nickels and 45 dimes
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