Understanding Discounts and Percentages

The video tutorial covers solving real-life percent problems, including calculating discounts and price increases. It provides examples of finding new prices after discounts, determining original prices from discounted prices, and calculating original prices from increased prices. The tutorial emphasizes understanding percent as a concept and translating it into simple equations for practical applications.

Why are percentages considered an important concept in real life?

• They are used in many financial calculations.

• They are only used in scientific research.

• They are only used in academic settings.

• They are not relevant to everyday life.

If a shirt costs $18 and is discounted by 20%, what percentage of the original price is left?

• 50%

• 100%

• 80%

• 20%

How do you calculate the new price of an item after a discount?

• Multiply the original price by the remaining percentage as a decimal.

• Subtract the discount from the original price.

• Add the discount to the original price.

• Divide the original price by the discount percentage.

What is the expression for the new price of an $18 shirt after a 20% discount?

• $18 - 0.8

• $18 * 0.2

• $18 * 0.8

• $18 + 0.2

If a shirt originally costs $18 and is discounted by 20%, what is the new price?

• $15.00

• $18.00

• $14.40

• $16.00

What is the first step in calculating a new price after a discount?

• Multiply the original price by the discount percentage.

• Add the discount percentage to the original price.

• Subtract the discount percentage from the original price.

• Convert the discount percentage to a decimal.

How do you express a 20% discount as a decimal?

• 2.0

• 0.2

• 0.02

• 20.0

How do you express 80% as a decimal?

• 80.0

• 8.0

• 0.8

• 0.08

A water bill of $34 is increased by 8%. What is the new percentage of the original bill?

• 8%

• 108%

• 92%

• 100%

What is the decimal representation of 108%?

• 0.108

• 108.0

• 10.8

• 1.08