Final answer:
Sadie paid a 4.5% sales tax on her purchase. To calculate sales tax in other examples, convert the percentage to a decimal, multiply it by the original price, and add the result to the original price to get the total amount paid.
Step-by-step explanation:
To determine the percent tax Sadie paid, we can deduce it from the total multiplier she used. Since she multiplied the price by 1.045 to get the total plus tax, it means that 100% of the original price plus 4.5% tax gives the new price. Therefore, the percent tax Sadie paid is 4.5%.
Example calculation of sales tax: Emily bought a jacket for $85 with a sales tax rate of 7.5%. The amount of sales tax she pays can be calculated by converting the percent to a decimal and then multiplying by the price.
- Convert 7.5% to a decimal: 7.5% = 0.075
- Multiply the price by the decimal sales tax rate: $85 × 0.075 = $6.375
- Round to nearest cent: Sales tax is $6.38
- Add the sales tax to the original price to find the total: $85 + $6.38 = $91.38
The total cost Emily pays including the sales tax is $91.38.