Maria F.
asked • 08/13/17
Susan paid for her library fine with 16 coins consisting of nickels and dimes. If the fine was 1.35$, how many coins were nickels?
Andy C.
answered • 08/13/17
Math/Physics Tutor
D + N = 16
10D + 5N = 135
10D + 5(16 - D) = 135
10D + 80 - 5D = 135
80 + 5D = 135
5D = 55
D = 11
11 dimes, 5 nickles
1.10 + 0.25 = 1.35 <--- it checks
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