SOLUTION: Every item in the Just a Dollar store is priced at $1.00. When Mary Jo opens the store, there is $125.50 in the cash register. When she counts the money in the cash register at t

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Question 713162: Every item in the Just a Dollar store is priced at $1.00. When Mary Jo opens the store, there is $125.50 in the cash register. When she counts the money in the cash register at the end of the day, the total is 1,058.60. If the sales tax rate is 8.5%, how many items were sold that day?
I need to make an equation and solve it. I tried 1058.60-125.50(0.085)=X, but that didn't work and then I tried 1058.60(0.085)-125.50=X and that didn't work either so im at a loss.
Answer by htmentor(1343) About Me  (Show Source):
You can put this solution on YOUR website!
The total revenue for the day is 1058.60 - 125.50 = $933.10
This revenue is the numer of items (n) sold times $1, plus the sales tax revenue on those n items:
933.10 = 1.00n + 0.085n = 1.085n
n = 933.1/1.085 = 860
So there were 860 items sold