Question

The cost of a calculus textbook is $185.67 after a 6.75% sales tax is applied. What was the cost of the textbook before the tax was added?

Answer 1

the cost of the textbook was $173.14 before the tax was added

Explanation:

6.75% of $185.67 is 0.0675 x $185.67 = $12.53

$12.53 is 6.75% of $185.67

sine $185.67 is the total AFTER we subtract the amount

$185.67 - $12.53 = $173.14