SOLUTION: Jill has 3.50$ in nickels and dimes. If she has 50 coins, how many of each type of coin does she have?

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Question 109840This question is from textbook beginning algebra
: Jill has 3.50$ in nickels and dimes. If she has 50 coins, how many of each type of coin does she have?This question is from textbook beginning algebra

Answer by josmiceli(6786) About Me  (Show Source):
You can put this solution on YOUR website!
n = number of nickels
d = number of dimes
n+%2B+d+=+50 there are 50 coins
.05n+%2B+.1d+=+3.50 The coins add up to $3.50
multiply this equation by 10
.5n+%2B+d+=+35
Subtract this equation from the 1st one
.5n+=+15
n+=+30 answer
n+%2B+d+=+50
30+%2B+d+=+50
d+=+20 answer
Ther are 30 nickels and 20 dimes