Final answer:
To find the total cost of purchasing shirts, subtract the value of the coupon from the original price, calculate the sales tax, and add the cost without tax and the sales tax.
Step-by-step explanation:
To find the total cost of purchasing the number of shirts needed to use your coupon after your coupon is applied and a 7.5% sales tax is charged, you can follow these steps:
- First, calculate the cost of the shirts without tax by subtracting the value of the coupon from the original price.
- Next, calculate the sales tax by multiplying the cost of the shirts without tax by 7.5% (or 0.075).
- Finally, add the cost of the shirts without tax and the sales tax to find the total cost of purchasing the shirts.
For example, if the original price of a shirt is $20 and you have a $5 coupon, the cost of the shirts without tax would be $20 - $5 = $15.
The sales tax would be calculated as $15 * 0.075 = $1.125.
Therefore, the total cost of purchasing the shirts would be $15 + $1.125 = $16.125.