7.4D Percent Increase and 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

Donna got a raise, and her hourly wage increased from $7 to $9.50. How much was the increase?

• $17.50

• $2.50

• $8

• $9.50

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

• $\approx19\%$

• $5\%$

• $\approx10\%$

• $17\%$

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

Find the percent of change if the original cost was $5 and the new cost is $1.

• Increase $4

• Decrease $4

• Decrease 80%

• Decrease 40%

Find the percent of change.

From 24 teachers to 30 teachers.

• 25% increase

• 20% increase

• 25% decrease

• 25% increase

Last year, 625 students attended Kener's school. This year, 590 students attend the school. Is the percent of change an increase or decrease?

• Increase

• Decrease

Original Quantity: 10

New Quantity: 5

Calculate the percent change.

• 5

• 5%

• 50

• 50%

Is the following rate of change a percent increase or decrease?

87.5% to 36.2%

• Increase

• Decrease