Percent of Increase/Decrease and Simple Interest

Margaret was 34 inches tall at 5 years of age. She is now 62 inches tall. To the nearest whole percentage, what is her percent of change?

• 82% decrease

• 82% increase

• 45% decrease

• 45% increase

The number of leaves on the ground increased 240% during a recent wind storm. If 2,700 leaves were on the ground before the storm, how many were on the ground after the storm?

• 9,180 leaves

• 6,480 leaves

• 1,025 leaves

• 9,111 leaves

Abram has $600 in a savings account that earns 1.5% annual simple interest. If he does not make any deposits or withdrawals, how much interest will he earn in 3/4 year?

• $675

• $2.15

• $215

• $6.75

You bought a car for $24,500. You got a 5 year loan for the car. You paid $9,187.50 in simple interest. What was your interest rate?

• 7.5%

• 2.5%

• 8%

• 5.75%

A store is having a huge 30% off sale. The sofa you want is priced at $945. The tax is 6%. What is the DISCOUNT (savings)?

• $130.50

• $332.25

• $357.89

• $283.50

A computer that originally costs $929 was returned to the electronics store. Because the box was opened, the store put it on the clearance rack for 35% off. What is the price of the computer?

• $325.15

• $1,254.15

• $603.85

• $500

In 2000, the population of a town was 19,500 people. In 2010, the population of the same town was 28,000. Find the percent of change in population from 2000 to 2010.

• 30.4% increase

• 30.4% decrease

• 43.6% increase

• 43.6% decrease

Vera's final average in seventh grade was 96. In eighth grade, her final average was 91. Find the percent of change in her final average from seventh grade to eighth grade.

• 5.2% decrease

• 5.2% increase

• 5.5% decrease

• 5.5% increase

Ruby deposited $1,200 in an account that pays 5% in simple interest. How much will the account earn after 8 years.

• $4,800

• $480

• $5,200

• $520

Tyler opened a credit card with a 19.5% simple interest rate to purchase a $879 laptop. If he pays off the laptop in 1.5 years, how much will he have paid in total?

• $257.11

• $621.89

• $1,045.25

• $1,136.11