Final answer:
The student's question involves mathematics, specifically the calculation of the total amount paid after adding a tip and sales tax to a purchase. By multiplying the original price by the percentage rates and then summing up those values with the original amount, one obtains the total amount to be paid.
Step-by-step explanation:
The question focuses on how to calculate the total amount paid for a purchase after including a tip and sales tax. Both the tip and tax are percentages that are calculated based on the original amount of the purchase. To find the final amount you must first calculate the sales tax and tip separately:
- Amount of sales tax = price × rate of sales tax
- Amount of tip = price × rate of tip
Afterwards, you add both the sales tax and the tip to the original price to get the total amount paid. An example would include a restaurant bill where the food cost is $47.50, sales tax is 6%, and an optional tip of 20% is given:
- Sales tax = $47.50 × 6% = $2.85
- Tip = $47.50 × 20% = $9.50
- Total = Original price + Sales tax + Tip = $47.50 + $2.85 + $9.50 = $59.85
This is the total amount that will be paid at the restaurant's register if payment is made using a credit card, ensuring the server receives their tip.