Eric H. answered • 02/22/21
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Gabby S.
asked • 02/22/21what is the solution ?
Antoinette has ninety-seven nickels and dimes totaling $7.10. How many of each coin does she have?
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2 Answers By Expert Tutors
n + d = 79
0.05n + 0.1d = 7.1
Solve the first for n or d. I'll do d.
d = 79 - n
Suuuuubstitute!
0.05n + 0.1(79 - n) = 7.1
0.05n + 7.9 - 0.1n = 7.1
-0.05n = -0.8
n = 16 nickles
d = 79 - 16
d = 63 dimes
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Eric H.
Great answer02/22/21