Asked by Kristen

A bank teller counts her $10 and $5 bills at the end of the day. The total value of the money is $595. Let f represent the number of $5 bills.

I have to write an equation that represents the total value of the money. I know f = 5 and 2f = 10 but I am stuck about what do do next. Please help!
Answered by Reiny
f stands for the <b>number</b> of $5 bills, so by saying f = 5, you are saying there are five $5 bills.
It does not say that anywhere
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let f be the number of fives
let t be the number of tens

so the VALUE of our fives = 5f
and the VALUE of our tens = 10t

5f + 10t = 595
divide by 5
f + 2t = 119
Answered by Kristen
Reiny, thanks! I understand the difference between 5f and 5=f now - makes more sense! I forgot something from my original problem, though...it also says the bank teller has a total of 70 bills. Now what?!
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