The sticker price p of a purchase with 1/10 sales tax and a total price (including tax) of $5.28 can be found using the equation 11/10p=5.28.

Question

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Answer 1

In general:

Total purchase price = sticker price + (sticker price)*(tax rate as a percent) 

In this problem:

                      5.28 = P + (P)*(.10)

 

Think of the right hand side of this equation as 1P + .10P. That would be 1.10P, right? 

 

That's the same thing you'd get if you divided 11/10 as they have shown in the description. 

 

So, do you need to solve for P, the original price? 

 

$5.28 = 1.10P 

 

Divide each side by 1.1 (you could also multiply $5.28 by 10 and divide by 11)

and the result is 

P = $4.80