Question 1045600: Juan has 16 coins all nickels and dimes this collection of coins is worth 1.15 how many nickels and dimes are there Found 2 solutions by advanced_Learner, MathTherapy:Answer by advanced_Learner(501) (Show Source):
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Juan has 16 coins all nickels and dimes this collection of coins is worth 1.15 how many nickels and dimes are there
Let number of nickels be N
Then number of dimes = 16 - N
We then get: .05N + .1(16 - N) = 1.15
.05N + 1.6 - .1N = 1.15
.05N - .1N = 1.15 - 1.6
- .05N = - .45
N, or number of nickels = =
Number of dimes: 16 - 9 =
