Simple Interest and Percent of Change

Timmi puts $300 in a bank account earning 4% interest.  How much will she earn in interest in 1 year?

Jessica borrowed $500 from a bank for 2 years and was charged simple interest. The total interest that she paid on the loan was $70. As a percentage, what was the annual interest rate of her loan?

Match the following

Felipe invested in a savings bond for 6 years and was paid simple interest at an annual rate of 3%. The total interest that he earned was $540. How much did he invest?

5.) In a class, the number of students has been decreased from 27 to 18. Find the percent of change.

7.) The World Future Society predicts that by the year 2025, airplanes will be able to carry 1400 passengers. Today’s biggest jets can carry 600 passengers. What will be the percent of change in the number of airplane passengers?

2. Find the PERCENT of Change.

The original cost was $50 and the new cost is $60.

4. 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?