SOLUTION: Paul has a collection of nickels and dimes that has a total value of $12.50. He has 150 coins in all. How many dimes does Paul have?

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Question 1138058: Paul has a collection of nickels and dimes that has a total value of $12.50. He has 150 coins in all. How many dimes does Paul have?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
d, number of dimes
150-d, number of nickels

0.05%28150-d%29%2B0.1d=12.5----------question asks for d. Solve for d.