Calculating Costs, Tips, and Taxes

This lesson by Mr. Richards covers sales tax, tips, and markups. It explains what sales tax is and provides two methods for calculating it. The lesson also discusses tips, their purpose, and how to calculate them using similar methods. Additionally, it covers how to combine sales tax and tips to find the total cost of a service or product. Finally, the concept of markup is introduced, explaining how stores increase prices to make a profit. Each section includes examples to illustrate the calculations.

What is the main focus of today's lesson?

• Calculating discounts

• Understanding sales tax, tips, and markups

• Learning about interest rates

• Exploring investment strategies

What is sales tax?

• An additional charge on purchased items

• A reward for buying in bulk

• A discount on items

• A fee for using a credit card

How do you convert a percentage to a decimal?

• Move the decimal point two places to the right

• Move the decimal point one place to the right

• Move the decimal point one place to the left

• Move the decimal point two places to the left

In method one of calculating sales tax, what is the first step?

• Divide the price by the tax rate

• Add the tax to the price

• Multiply the price by the tax rate

• Subtract the tax from the price

What is the total cost of a $42 item with a 5.5% sales tax using method one?

• $44.31

• $42.00

• $43.50

• $45.00

In method two of calculating sales tax, what is added to 100%?

• The discount percentage

• The original price

• The tax percentage

• The total cost

What is the purpose of a tip?

• To cover taxes

• To reward good service

• To reduce the cost of a service

• To pay for the service

Which of the following is an example of when you might give a tip?

• Buying groceries

• Getting a haircut

• Purchasing a car

• Paying a utility bill

What is the total cost of a $15 taxi ride with a 20% tip using method one?

• $17.50

• $20.00

• $15.00

• $18.00

In method two of calculating a tip, what is the total percentage used?

• 100%

• 120%

• 80%

• 150%