Question

A textbook costs $108.00. If Matthew paid a total of $113.94 for the book and sales tax, what rate of sales tax was he charged, in a percentage ?

Answer 1

Answer:

Matthew was charged 5.5% in sales tax.

Step-by-step explanation:

The percent change of an item can be found using the following equation:

$\frac{new cost - original cost}{original cost} x 100$

In the problem, the original cost of the textbook is $108.00 and the cost after tax is $113.94:

$\frac{113.94 - 108.00}{108.00} =\frac{5.94}{108} x 100 = 5.5%$

So, the rate of sales tax that Matthew was charged is 5.5%.