Understanding Percent Problems

The video tutorial explains how to solve percent problems using the percent equation. It provides three examples: calculating the sale price of a discounted watch, determining the original price of earrings from their sale price, and finding the maximum price of a toy that can be purchased with a gift card including tax. Each example involves defining variables, setting up equations, and solving for the unknowns.

What is the first step in calculating the sale price of an item with a discount?

• Divide the original price by the discount percentage

• Subtract the discount from the original price

• Multiply the original price by the discount percentage

• Add the discount to the original price

If a watch originally costs $750 and is on sale for 15% off, what is the sale price?

• $112.50

• $637.50

• $750.00

• $6375.00

How do you convert a percentage to a decimal?

• Subtract 100

• Add 100

• Divide by 100

• Multiply by 100

What is the equation used to find the original price of an item after a discount?

• Sale Price = Original Price + Discount

• Original Price = Sale Price + Discount

• Sale Price = Original Price - Discount

• Original Price = Sale Price - Discount

If earrings are marked 20% off and the sale price is $140, what was the original price?

• $175

• $140

• $112

• $160

What is the simplified form of the equation: P - 0.2P?

• 0.8P

• 1.2P

• 0.2P

• P

What must be considered when using a gift card to purchase an item with sales tax?

• Only the price of the item

• Both the price of the item and the sales tax

• Neither the price nor the sales tax

• Only the sales tax

If Tommy has a $50 gift card and the sales tax is 9%, what is the maximum price of a toy he can buy?

• $40.00

• $54.50

• $50.00

• $45.87

How do you calculate the total cost of an item including sales tax?

• Multiply the price of the item by the sales tax

• Subtract the sales tax from the price of the item

• Divide the price of the item by the sales tax

• Add the sales tax to the price of the item

What is the decimal equivalent of a 9% sales tax?

• 0.09

• 0.9

• 9.0

• 0.009