Exploring Applications of Percent in Math

This video tutorial covers the application of percents in real-world scenarios, including calculating sales tax, understanding simple interest, and using multiple percents in transactions. It also explains how to calculate commissions from sales. The tutorial provides examples to illustrate these concepts, helping viewers understand how to apply percents in various financial contexts.

What is sales tax?

• A discount given on the purchase price.

• A fee for using a credit card.

• A percentage of the purchase price collected by the seller.

• A fixed amount added to the price of an item.

If an item costs $80 and the sales tax is 8%, what is the total cost?

• $84.00

• $88.00

• $86.40

• $80.80

How much is the sales tax on a $20 shirt with a 5% tax rate?

• $2.00

• $0.50

• $1.00

• $1.50

What is simple interest?

• A fee for borrowing money.

• A discount on the principal.

• A percentage of the principal earned or paid over time.

• A fixed amount added to the principal.

If you deposit $200 at 3% simple interest per year, how much interest will you earn in 2 years?

• $6.00

• $12.00

• $24.00

• $18.00

How much interest is charged on a $400 loan at 5% per year for 4 years?

• $80

• $20

• $40

• $60

What is the total amount to be paid back on a $400 loan with $80 interest?

• $420

• $440

• $460

• $480

If a meal costs $60, the sales tax is 7%, and the tip is 15%, what is the total cost?

• $70.20

• $78.00

• $73.20

• $75.00

How do you calculate the tip on a meal before tax?

• Add the tax and tip percentages and multiply by the meal cost.

• Multiply the total cost by the tip percentage.

• Subtract the tax from the total cost and multiply by the tip percentage.

• Multiply the meal cost by the tip percentage.

If Kedar earns a monthly salary of $2200 plus a 3.75% commission on $4500 sales, what is his total earnings?

• $2360.75

• $2400.75

• $2300.75

• $2368.75