Final answer:
To find the sale price of a $90 dress with 35% off, multiply $90 by 0.35 to get the discount amount ($31.50), then subtract it from the original price to get the final cost ($58.50). Similarly, for an $85 jacket with 7.5% sales tax, multiply $85 by 0.075 to get the sales tax ($6.375) and add it to the original price for a total of $91.38.
Step-by-step explanation:
To calculate the discount on a $90 dress with a 35% off sale, first determine the amount of the discount. Take 35% of $90:
- 35% is written as 0.35 in decimal form.
- Multiply $90 by 0.35 to get the dollar amount of the discount.
- $90 × 0.35 = $31.50
Now, subtract the discount from the original price:
The dress with the discount applied would cost $58.50.
Let's apply this to the jacket example:
- Start with the original price of the jacket, which is $85.
- The sales tax rate is 7.5%.
- Convert 7.5% to a decimal by dividing by 100, which equals 0.075.
- Multiply the original price by the sales tax rate to find the amount of sales tax.
- $85 × 0.075 = $6.375
Add this to the original price to find the total cost:
So, the total cost of the jacket including sales tax is $91.38, after rounding the sales tax to the nearest cent.