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tati7149
10.03.2021 •
Mathematics
Samuel orders four DVDs from an online music store. Each DVD costs $9.89. He has a 25% discount code, and sales tax is 7.5%. Round sales tax amounts to the nearest cent. What is the total cost of his order?
Analyze information
Identify the important information.
The price of one DVD is $9.89.
The discount is 25% or 0.25.
The sales tax is 7.5% or 0.075.
Formulate a plan
Find the regular price for four DVDs. Then, calculate the amount discounted and subtract the discount from the price. Next, calculate the sales tax and then add that to the discounted price to find Samuel's final cost.
Solve
Regular price: 4 × $9.89 = $39.56
Discount: 0.25 × $39.56 = $9.89
Subtract the discount from the total.
Total − Discount = Discounted Price
$39.56 − $9.89 = $29.67
Calculate the sales tax on the discounted price.
Sales tax: 0.075 × $29.67 = $2.23
Add the sales tax to the discounted total to get the final price.
Discounted Total + Sales tax = Final Price
$29.67 + $2.23 = $31.90
The total cost of Samuel's order is $31.90.
Solved
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