SOLUTION: Ron has 12 coins with a total value of $1.40. The coins are nickels and quarters. How many of each coin does he have?

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Question 1052887: Ron has 12 coins with a total value of $1.40. The coins are nickels and quarters. How many of each coin does he have?
Answer by ikleyn(52803) About Me  (Show Source):
You can put this solution on YOUR website!
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Answer. Four quarters and 8 nickels.

Solution 

Let Q = # of quarters.
Then the number of nickels is (12-Q).


The equation is

25*Q + 5*(12-Q) = 140.

There is entire bunch of the lessons on coin problems
    - Coin problems
    - More Coin problems
    - Solving coin problems without using equations
    - Kevin and Randy Muise have a jar containing coins
    - Typical coin problems from the archive
    - More complicated coin problems
    - OVERVIEW of lessons on coin word problems
in this site.

Read them and become an expert in solution of coin problems.

Also, you have this free of charge online textbook in ALGEBRA-I in this site
    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.

It contains many other solved word problems, as well as many other interesting and useful things.