Calculating Original Prices from Discounts

In this video, Mr. J explains how to calculate the original price of an item given its sale price and discount percentage. He demonstrates the process using two examples, where he sets up equations to find the original price by subtracting the discount percentage from 100%, converting it to a decimal, and solving the equation. The video concludes with a summary of the method.

What is the main topic covered in this video?

• Calculating the sale price from the original price

• Calculating the original price from the sale price and discount

• Calculating the discount from the original price

• Calculating the tax on the sale price

What variable is used to represent the original price in the equation?

• x

• y

• p

• z

How do you convert a percentage to a decimal?

• Move the decimal point one place to the left

• Move the decimal point two places to the right

• Move the decimal point one place to the right

• Move the decimal point two places to the left

What is the decimal form of 70%?

• 0.70

• 7.0

• 0.07

• 0.7

What is the original price if the sale price is $59.50 and the discount is 30%?

• $70.00

• $85.00

• $59.50

• $100.00

What is the percentage of the original price paid if the discount is 55%?

• 30%

• 45%

• 100%

• 55%

What is the decimal form of 45%?

• 4.5

• 0.45

• 45.0

• 0.045

What is the original price if the sale price is $112.41 and the discount is 55%?

• $112.41

• $249.80

• $150.00

• $200.00

What operation is used to isolate the variable in the equation?

• Addition

• Subtraction

• Multiplication

• Division

What is the final step in solving for the original price?

• Adding the sale price to the discount

• Subtracting the discount from the sale price

• Dividing the sale price by the decimal form of the percentage paid

• Multiplying the sale price by the discount