SOLUTION: A cash register contains only five dollar and ten dollar bills. It contains twice as many five's as ten's and the total amount of money in the cash register is 700 dollars. How man

Question 1119382: A cash register contains only five dollar and ten dollar bills. It contains twice as many five's as ten's and the total amount of money in the cash register is 700 dollars. How many ten's are in the cash register?
Found 2 solutions by ikleyn, Alan3354:
Answer by ikleyn(53937)   (Show Source): You can put this solution on YOUR website!
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In accordance with the condition, you can group the banknotes in sets ($5, $5, $10). Each set is worth 10 + 5 + 5 = 20 dollars, and the number of such sets is = 35. So, you have 35 of $10 bills and 70 of $5 dollar bills, in total 35*$10 + 70*$5 = $700. ! Correct ! Thus you got the mental solution using the grouping method.

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For coin problems and their detailed solutions see the lessons in this site:
    - 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
    - Three methods for solving standard (typical) coin word problems
    - More complicated coin problems
    - Solving coin problems mentally by grouping without using equations
    - Santa Claus helps solving coin problem

You will find there the lessons for all levels - from introductory to advanced,
and for all methods used - from one equation to two equations and even without equations.

Read them attentively and become an expert in this field.

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".

Save the link to this online textbook together with its description

Free of charge online textbook in ALGEBRA-I
https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson

to your archive and use it when it is needed.

Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
A cash register contains only five dollar and ten dollar bills. It contains twice as many five's [sic] as ten's [sic] and the total amount of money in the cash register is 700 dollars. How many ten's [sic] are in the cash register?
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apostrophes are not appropriate.
The plural of five is fives, not five's.

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