SOLUTION: You have a total of 50 nickels and dimes in your pocket. They are worth $3.15. How many of each coin do you have?

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Question 1057435: You have a total of 50 nickels and dimes in your pocket. They are worth $3.15. How many of each coin do you have?

Found 2 solutions by Alan3354, ikleyn:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
You have a total of 50 nickels and dimes in your pocket. They are worth $3.15. How many of each coin do you have?
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n + d = 50
5n + 10d = 315
----
etc

Answer by ikleyn(52855) About Me  (Show Source):
You can put this solution on YOUR website!
.
You have a total of 50 nickels and dimes in your pocket. They are worth $3.15. How many of each coin do you have?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 

Or 

5n + 10*(50-n) = 315,

solve for n.

Which is the same (is equivalent).

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".