Question

Samuel paid $9.10, including tax, for a dog collar. Before tax, the original price of the collar was $8.75. What was the sales tax rate? Let r represent the rate as a decimal. Complete the equation that represents the problem. (Hint: The original price of the collar plus the amount of tax equals the total cost including tax.)

Answer 1

8.75 + 8.75r - = 9.10

Answer 2

r=0.04

Explanation:

The original Price of the Collar= $8.75

Amount Paid by Samuel =$9.10

Tax Paid = Amount Paid- Original Price

=9.10-8.75=$0.35

Let x be the rate of tax.

`(x)/(100) X 8.75=0.35\\8.75x=0.35 X 100\\x=35 / 8.75=4`

The rate is 4%.

Therefore, rate of tax(r) in decimal = 0.04.

NOTE: Since the equation to be completed is not given, I have simply found the rate and hope you can pick it up from there.