The value of a number of dimes and quarters is $1.45. If the quarters were replace by nickels, the value would be $0.85. How many dimes and quarters are there?

For each quarter that is replaced by a nickel, how much value is lost? (Hint: Subtract.)

How much value, in total, has been lost? (Hint: Subtract.)

So how many replacements were made? (Hint: Divide.)

Then how many quarters were there?

What is the value of this number of quarters? (Hint: Multiply.)

What then is the value of the dimes? (Hint: Subtract.)

Then how many dimes were there? (Hint: Divide.)

If you get stuck, please reply showing your work and reasoning so far. Thank you!