Calculating Original Prices from Discounts

The video tutorial explains how to find the original price of an item given its sale price and discount percentage. It introduces the equation where the original price is divided by 100% minus the discount rate to get the sale price. The tutorial provides three examples with different discount rates (25%, 15%, and 40%) to demonstrate the calculation process. The video concludes by summarizing the method and encouraging viewers to ask questions.

What is the main objective of the problems discussed in the video?

• To find the sale price given the original price and discount.

• To find the tax amount on a discounted item.

• To calculate the discount percentage from the sale price.

• To determine the original price from the sale price and discount percentage.

Which equation is used to find the original price from the sale price and discount percentage?

• Original Price = Sale Price / (100% - Discount Percentage)

• Original Price = Sale Price + Discount

• Original Price = Sale Price * Discount Percentage

• Original Price = Sale Price - Discount

What is the first step in solving for the original price using the given equation?

• Divide the sale price by the discount percentage

• Add the sale price and discount percentage

• Subtract the discount percentage from 100%

• Multiply the sale price by the discount percentage

In the first example, what is the original price if the sale price is $48.75 with a 25% discount?

• $75

• $60

• $65

• $70

How do you convert a percentage to a decimal for calculation purposes?

• Multiply the percentage by 10

• Multiply the percentage by 100

• Divide the percentage by 100

• Divide the percentage by 10

In the first example, what percentage is used as the denominator in the calculation?

• 100%

• 25%

• 50%

• 75%

In the second example, what is the original price if the sale price is $100.30 with a 15% discount?

• $118

• $120

• $115

• $110

What is the decimal equivalent of 85% used in the second example?

• 0.085

• 0.85

• 8.5

• 85

In the second example, what percentage is used as the denominator in the calculation?

• 15%

• 50%

• 85%

• 100%

In the third example, what is the original price if the sale price is $327 with a 40% discount?

• $500

• $650

• $545

• $600