Simple Percents

Sam borrowed $4,500 for 2 years and had to pay $630 simple interest at the end of that time. What rate of interest did he pay?

• 6%

• 7%

• 8%

• 9%

You lend $240 to your friend.  He pays you back $270.  What interest rate did you charge your friend?

• 88%

• 20%

• 12.5%

• 10%

What number is 20% of 102?

• 204

• 122.4

• 20.4

• 20

Mrs. Neary bought a leaf-blower that was 19% off the original price. If Mrs. Neary saved $40, what is the best estimate of the original price of the leaf-blower?

• $50

• $200

• $100

• $80

Dan borrows $1200 from a bank with 8% simple interest per year.  How much will he have to pay back IN TOTAL after 2 years?

• $150

• $1350

• $192

• $1392

Brian ate 3 granola bars.  This is 25% of the total number of granola bars in a box.  How many granola bars are in a box?

• 2

• 12

• 7.5

• 75

The population of your town increased within the past 10 years, from approximately 82,000 people to 87,000. What was the percent increase in population?

• 10%

• 5%

• 50%

• 6%

Yesterday, you wrote the first 5 pages of your novel. Today, you were extra productive and wrote 18 pages. What is the percent increase in your productivity between today and yesterday?

• 260%

• 100%

• 5%

• 200%

12% of the cars that went through the car wash were blue. If 75 cars went through the car wash, how many of the cars were blue?

• 900

• 90

• 0.09

• 9

The movie theater has 250 seats. 225 seats were sold for the current showing. What percent of seats are empty?

• 10%

• 20%

• 80%

• 90%