SOLUTION: Mary has $2.40 in dimes and nickels. If she has 15 more dimes than nickels, how many of each coin does she have?

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Question 445997: Mary has $2.40 in dimes and nickels. If she has 15 more dimes than nickels, how many of each coin does she have?
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
5(n)+10(n+15)=240
5n+10n+150=240
15n=90
n=6
n+15=21
Mary has 6 nickels and 21 dimes..