SOLUTION: Julie Richards paid $86.80 for a dress. the cost included an 8 1/2% sales tax. what was the cost of the dress without the sales tax?

Algebra ->  Finance -> SOLUTION: Julie Richards paid $86.80 for a dress. the cost included an 8 1/2% sales tax. what was the cost of the dress without the sales tax?      Log On

Let x be cost of the dress without the sales tax.


    x + 0.085x = 86.80


    x*(1+0.085) = 86.80


    x           =  = 80.00  dollars.    ANSWER