SOLUTION: Angela has 23 coins in quarters and dimes in her pocket. The total value is $5.00. How many of each coin does she have?Angela has 23 coins in quarters and dimes in her pocket. The

Question 1063546: Angela has 23 coins in quarters and dimes in her pocket. The total value is $5.00. How many of each coin does she have?Angela has 23 coins in quarters and dimes in her pocket. The total value is $5.00. How many of each coin does she have?

Answer by ikleyn(52817) (Show Source): You can put this solution on YOUR website!
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Angela has 23 coins in quarters and dimes in her pocket. The total value is $5.00. How many of each coin does she have?
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Let "d" be the number of dimes.
Then the number of quarters is (23-d).

The "value" equation is 

10d + 25*(23-d) = 500 cents.

10d + 575 - 25d = 500,

10d - 25d = 500 - 575,

-15d = -75,

d =  = 5.

Answer.  5 dimes ans 23-5 = 18 quarters.

There is entire bunch of 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
    - Solving coin problems mentally by grouping without using equations
    - Santa Claus helps solving coin problem
    - 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.

The referred lessons are the part of this online textbook under the topic "Coin problems".

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