Percent of Change and Simple Interest

Mr Ritu had 27 students in his class last year and this year he has 30 students in his math class. What is the percent of change?

• 24%

• 20%

• 11%

• 50%

Last week, you finished level 2 of a video game in 32 minutes. Today, you finished level 2 in 28 minutes. What is your percent of change?

• Increase 12.5%

• Decrease 12.5%

• Increase 4%

• Decrease 4%

Tickets to Disney World are $100. The price is going to increase on January 1. What is the percent of change if the cost increases to a $120?

• 25%

• 18%

• 20%

• 50%

One week, 72 people got a speeding ticket. The next week, only 36 people got a speeding ticket. What is the percent of change in the speeding tickets?

• Increase 50%

• Decrease 50%

• Increase 1%

• Decrease 1%

Ryan deposited $2000 into a savings account at the interest rate of 4% per year. How much simple interest will he earn in 5 years?

• $800

• $1000

• $450

• $400

Jack deposited $1,400 in his bank account.  After 3 years, the account earned $294 in interest.  Find the simple interest rate.

• 5%

• 8%

• 7.25%

• 7%

What is the percent change in the price of a coat that was originally priced $90 and is now $72?

• 80%

• 125%

• 25%

• 20%

Calculate the percent change from 50 to 75.

• 25%

• 50%

• 75%

• 100%

Maria borrowed $3,000 at a simple interest rate of 4% per year.  How much did she have to repay after 4 years?

• $480

• $3,480

• $4,800

• $7,800

If the original quantity is 15 and the new quantity is 19, which is the best estimate for the percent change?

• 25% decrease

• 5% decrease

• 5% increase

• 25% increase