SOLUTION: A coin bank contains 25 dimes and nickels. The total amount of money in the bank is $2.15. Find the number of dimes in the bank.

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Question 1112449: A coin bank contains 25 dimes and nickels. The total amount of money in the bank is $2.15. Find the number of dimes in the bank.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
x dimes
25-x nickels
.10x+.05(25-x)=2.15
.10x-.05x+1.25=2.15
.05x=0.90
x=18 dimes $1.80
25-x=7 nickels $0.35. They add to $2.15