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# If a CD costs 12.00 and its sales tax is 7.5% then what is its total price

cost of the CD (\$) + sales tax amount (\$) = total price of the purchase (\$)

understand that the sales tax amount depends on the price of the item(s) you're purchasing, in this case, the sales tax amount is 7.5% of \$12.00. To find this amount, you first have to convert the sales tax from percent form to decimal form:

7.5% / 100% = 0.075

and so, (\$12.00) + (\$12.00 * 0.075) = \$12.00 + \$0.90 = \$12.90

Total Price = Cost of CD + Sales Tax

Cost of CD: \$12

Sales Tax: 7.5% of \$12

To find sales tax amount:

1. change the percentage to a decimal by dividing the percentage by 100:

7.5% / 100% = 0.075

2. Multiply the cost of the CD by the decimal amount:

0.075 x \$12.00 = \$0.90 - this is the sales tax amount

To find total sales price: Add cost of CD to sales tax amount

\$12 + \$0.90 = \$12.90

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