Percent Increase/Decrease

Which of the following definitions best defines Percent Increase?

• Describes how much a quantity goes up in comparison to the original amount.

• Describes how much a quantity goes down in comparison to the original amount.

What is the first step in finding percent increase?

• Solving for the percent decrease

• Finding the amount of change

Amber got a raise, and her hourly wage increased from $8 to $9.50. What is the percent increase?

A store purchases T-shirts from a factory for $20 each and sells them to customers for $23. What is the percent increase in price?

• $3

• 3% increase

• 15% increase

• Doesn't change

Does this question represent a percent INCREASE or a percent DECREASE?

• Increase

• Decrease

If a shirt originally costs $50 and is marked down by 20%, what is the new price?

• $40

• $30

• $45

• $35

A car decreases in value by 15% over a year. If it was originally worth $20,000, what is its value after one year?

• $17,000

• $18,000

• $15,000

• $16,500

If a population of 5000 increases by 10% in a year, what will be the population after one year?

• 5500

• 6000

• 5050

• 6500

A store sold 150 items last month and 180 items this month. What is the percentage increase in sales?

• 20%

• 15%

• 25%

• 30%

A population of 500 increases by 10% in a year. What is the new population?

• 550

• 600

• 510

• 500