Name:    Lesson 4.9: Percent Change

1.

The population of a school increased from 500 to 600 students. What is the percent increase?
 a. 20% b. 10% c. 15% d. 25%

2.

The population of a town increased from 1200 to 1500 residents. What is the percent increase?
 a. 12% b. 15% c. 25% d. 35%

3.

The height of a tree increased from 2 m to 8 m in one year. What is the percent increase?
 a. 40% b. 400% c. 4% d. 0.4%

4.

The population of a colony of ants decreased from 250 to 225 ants. What is the percent decrease?
 a. 20% b. 15% c. 5% d. 10%

5.

The population of a city decreased from 50 000 to 42 500 residents. What is the percent decrease?
 a. 12% b. 25% c. 15% d. 18%

6.

The amount of money in coin jar decreased from \$152.60 to \$99.19. What is the percent decrease?
 a. 35% b. 30% c. 15% d. 25%

7.

Gasoline prices decreased from 135.7¢/L in June to 78.7¢/L in November. What is the percent decrease in the price of gasoline?
 a. 58% b. 42% c. 52% d. 48%

8.

Sandra has \$2260 in her bank account. She withdrew \$519.80. By what percent did the amount in her bank account decrease?
 a. 37% b. 27% c. 33% d. 23%

9.

The number of students attending a local university increased from 18 676 students to 20 300 students. What is the percent increase in the student population?
 a. 5% b. 10% c. 8% d. 12%

10.

The number of cars sold last month at a local car dealer was 620 cars. The sales for this month dropped to 558 cars. What is the percent decrease in cars sold?
 a. 15% b. 10% c. 18% d. 12%