Lessons 20-21 Test Review: Solve Problems with Percents 2024-25

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents a part of a whole.

Front

How do you calculate the total cost including sales tax?

Back

Total Cost = Price + (Price x Sales Tax Rate).

Front

What is the formula for calculating simple interest?

Back

I = Prt, where I is interest, P is principal, r is rate, and t is time.

Front

How do you determine the better coupon between a dollar amount off and a percentage off?

Back

Calculate the final price for both options and compare them.

Front

What is the formula to calculate the final price after applying a discount?

Back

Final Price = Original Price - (Original Price x Discount Rate).

Front

How do you calculate a tip based on a meal subtotal?

Back

Tip = Meal Subtotal x Tip Percentage.

Front

What is the sales tax rate?

Back

The sales tax rate is a percentage added to the price of goods and services, collected by the seller.

Front

How do you find the total cost of a meal for a group including tip?

Back

Total Cost = Meal Subtotal + (Meal Subtotal x Tip Percentage).

Front

What does it mean if a loan has simple interest?

Back

Simple interest means that the interest is calculated only on the principal amount, not on the accumulated interest.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide by 100.