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 74304: Jill has $3.50 in nickels and dimes. If she has 50 coins, how
many of each type of coin does she have?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
5N is the value of all the nickels
10D is the value of all the dimes
5N+%2B+10D+=+350
It is given that
N+%2B+D+=+50
N+=+50+-+D
Therefore
5%2850+-+D%29+%2B+10D+=+350
250+-+5D+%2B+10D+=+350
5D+=+100
D+=+20
N+=+50+-+D
N+=+50+-+20
N+=+30
So, there are 30 nickels and 20 dimes