Percent/Simple Interest Quiz Review

A box of diapers is marked down 10%. How much are the diapers if they originally cost $28.75?

• $2.88

• $25.87

• $31.63

• $25.88

A certain laptop is really popular and sells for $209. Since sales are so good, the store raises the price by 12%.

What is the cost of the laptop after the markup?

• $234.08

• $250.80

• $250

• $183.92

An $80 printer has a 37.5% discount. Find the FINAL PRICE of the printer if the sales tax is 5.5%.

• $30

• $50

• $2.75

• $52.75

Gina is buying a new washing machine that costs $450. She has a 15% off coupon and must pay 6% sales tax.

How much will Beth pay for the washing machine?

• $382.50

• $405.45

• $67.50

• $412

Lando works for the postal service.

Last week he drove a total of 350 miles delivering mail and this week he drove a total of 415 miles.

What is the percent change in the number of miles driven?

• 18.6% increase

• 18.6% decrease

• 5.8% increase

• 5.8% decrease

The Justin family purchased their home in 2000 for $175,000.

They sold their home in 2017 for $250,000.

Find the percent change in the value of their home.

Classify as a percent increase or decrease.

• 23.3% decrease

• 42.9% decrease

• 23.3% increase

• 42.9% increase

Lindsay put $15,000 in an account with a simple interest rate of 4.5%. Calculate the amount of interest earned at the end of 8 years.

• $20,400

• $5,400

• $540,000

• $54,000

Donna borrowed $42,000 from the bank to open up a skateboard shop. If she had a simple interest rate of 5%, how much will she have paid to the bank in TOTAL once he paid the load back in full after 15 years?

• $73,500

• $31,500

• $315,000

• $143,400

Jennifer put $450 into an account with a simple interest rate of 2.5%. When she withdrew the money, she had earned a total of $67.50 in interest. How long did she leave the money in the account?

• 8 years

• 6 months

• 6 years

• 8 months

What was the simple interest rate on a $8,000 investment that was let in an account for 18 months and earned $360 in interest?

• 0.3%

• 3%

• 30%

• 0.03%