Percent, Percent Change, Percent Error, Mark Ups and Mark Downs, Simple Interest

Percent of Change: The value of a car that costs $16,000 changed to $12,000 after two years. What was the percent of change?

• 25%

• 33%

• 40%

Simple interest: You earn $75.00 in interest over 2 years at a 5% interest rate. How much did you invest? (Hint: Use I=PxRxT formula. The "P" is missing.)

• $100

• $700

• $750

• $800

Percent of Error: Seth measured the length of the string to be 10.5 cm. The actual length was 10.25. What was his percent of error?

• 2.3%

• 2.4%

• 24.3%

Percent Proportions: The ratio of cats to dogs is 2:3. What percent of the animals are cats?

• 20%

• 40%

• 60%

• 80%

What is the simple interest on a principal amount of $200 at a rate of 3% per year for 4 years?

• $18

• $24

• $30

• $36

Find the percent change.
Original amount:  16
New amount: 11

• 5%

• 31%

• .3%

• 56%

Calculate the percent change from 50 to 75.

• 25%

• 50%

• 75%

• 100%

A $120 jacket is marked down by 20%. What is the sale price of the jacket?

• $96

• $100

• $24

• $144

What is 30% of 150?

• 45

• 50

• 55

• 60

• 25%

• 20%

• 15%

• 10%