Samuel order four did from an online music stores. Each dvd cost 9.99$. He has a 20% discount code and sales tax is 6.75%. What is the total cost of the order

The pre tax cost of the four DVDs will be:

4 * 9.99 = 39.96

6.75% tax will amount to 6.75/100 * 39.96 →.0675 * 39.96 = 2.697 or 2.70 rounded off.

Cost of DVDs after tax will be 39.96 + 3.70 = 42.66 $

20% discount will be 20/100 * 42.66 →0.2 * 42.66 = 8.53 $

Cost of DVDs with 20% discount will be 42.66 - 8.53 = 34.13

Rounded off to the nearest cent, the total cost of the order is 34 $ and 10 cents.