Answer:
67%
$33.92
Step-by-step explanation:
So a few things happen. Starting at $50.88 there is a markup, so it is now y dollars. Then a tax of 6.25% is applied to this y, which gets $90.10. So we want to work backwards to find y.
First, we want to find a number that when it gets a tax of 6.25%, or .0625, we get 90.10. So it's a pretty simple algebra problem.
90.1 = y * 1.0625
90.1/1.0625 = y
84.8 = y
So now we know, before tax the store charges $84.80. if you don't get how I did something let me know.
Now, we want to know the percent increase from $50.88 to $84.80. We know it is an increase of $33.92. Well, we can use that. 33.92 is what percent of 50.88. or an algebra way of writing it is 50.88x = 33.92 So let's solve that real quick.
50.88x = 33.92
x = 33.92/50.88
x = 2/3
So now, in conclusion, startign with a price of $50.88, the store marks it up by 2/3, which is 67% more or less, and then there is a 6.25% sales tax
