Title: Percent of Change
Course: quiz duplicate error

Q: Solve.

On a biology test, a student got 25 questions correct but did not pass. On a second attempt, the student got 37 questions correct. What was the percent of increase?
- 12% (incorrect)
- 52% (incorrect)
- 48% (correct)
- 32.4% (incorrect)
A: 48%

Q: Solve.

Sales of frozen pizza for a club fund-raiser increased from 500 one year to 745 the next year. What was the percent of increase?
- 67.1% (incorrect)
- 51% (incorrect)
- 49% (correct)
- 32.9% (incorrect)
A: 49%

Q: Solve.

Enrollment in a business seminar increased from 51 people to 75 people. What was the percent of increase?
- 32% (incorrect)
- 52.9% (incorrect)
- 47.1% (correct)
- 68% (incorrect)
A: 47.1%

Q: Solve.

Last year, Maria earned $342 per week. This year, her salary increased to [Image] per week. What is the percent of increase?
- 7.3% (incorrect)
- 7.9% (correct)
- 92.7% (incorrect)
- 92.1% (incorrect)
A: 7.9%

Q: Solve.

A rectangular garden has vegetables planted in a 35-ft by 20-ft area. The vegetables are surrounded by a 2-ft border of flowers. By what percent is the area for planting vegetables increased if the 2-ft border of flowers is removed? (Hint: The border goes around the whole flower garden. Draw a picture to find the new dimensions!)
- 13% (incorrect)
- 11.9% (incorrect)
- 33.7% (correct)
- 34.8% (incorrect)
A: 33.7%

Q: Solve.

By switching service providers, a family's telephone bill decreased from about $50 a month to about $44. What was the percent of decrease?
- 6% (incorrect)
- 13% (incorrect)
- 12% (correct)
- 13.6% (incorrect)
A: 12%

Q: Solve.

The price of a printer was reduced from $400 to $260. What was the percent of decrease?
- 65% (incorrect)
- 53.8% (incorrect)
- 40% (incorrect)
- 35% (correct)
A: 35%

Q: Solve.

The price of a jacket was reduced from $226 to $158.20. What was the percent of decrease in the price?
- 32% (incorrect)
- 30% (correct)
- 3% (incorrect)
- 31% (incorrect)
A: 30%

Q: Solve.

The price of a shirt was reduced from $57.60 to $28.80 . What was the percent of decrease in the price?
- 51% (incorrect)
- 50% (correct)
- 52% (incorrect)
- 5% (incorrect)
A: 50%

Q: Solve.

Ms. Clark was not able to sell her house for $250,000, so she lowered the price to [Image]. What was the percent of decrease?
- 1566.7% (incorrect)
- 94% (incorrect)
- 6.4% (incorrect)
- 6% (correct)
A: 6%

Q: Solve.

All 30 of the students in a mathematics class attended class on Monday. On Tuesday only 25 students attended. What was the percent of decrease?
- 16.7% (correct)
- 80% (incorrect)
- 20% (incorrect)
- 83.3% (incorrect)
A: 16.7%

Q: Solve.

A carpeted living room and dining room area measures 35 ft by 12 ft. Mark decides to install wood flooring in the 14-ft by 12-ft dining room. By what percent has he reduced the area that is carpeted?
- 60% (incorrect)
- 12% (incorrect)
- 66.7% (incorrect)
- 40% (correct)
A: 40%

Q: Solve.

The population of a city decreased from 1,127,000 in 1995 to 936,000 in 2005. What is the percent of decrease? Round your answer to the nearest tenth of a percent.
- 16.9% (correct)
- 1.7% (incorrect)
- 17.5% (incorrect)
- 20.4% (incorrect)
A: 16.9%

Q: Solve the problem.

The normal gasoline mileage of a car is 41 mpg. On a smooth road, its mileage is 12% higher. What is its mileage on a smooth road? Round your answer to the nearest tenth.
- 50 mpg (incorrect)
- 4.9 mpg (incorrect)
- 45.9 mpg (correct)
- 41 mpg (incorrect)
A: 45.9 mpg

Q: Solve the problem.

After receiving poor service at a restaurant, Anita decides to leave a tip of only 12%. If the cost of the meal without tip is $33, what is the total amount that Anita paid?
- $37.13 (incorrect)
- $39.15 (incorrect)
- $36.96 (correct)
- $37.95 (incorrect)
A: $36.96

Q: Solve the problem.

Ted pays an annual premium of $357 for his life insurance policy. His brother Ned pays 22% more for the same policy because he is a little older. What is Ned's annual premium? Round your answer to the nearest dollar.
- $372 (incorrect)
- $436 (correct)
- $201 (incorrect)
- $421 (incorrect)
A: $436

Q: Solve the problem.

A camera costs $520. If the sales tax rate is 7%, what is the total price including tax? Round your answer to the nearest cent.
- $551.20 (incorrect)
- $884.00 (incorrect)
- $561.60 (incorrect)
- $556.40 (correct)
A: $556.40

Q: Solve the problem.

Jeff earns $254 per day. If his salary is raised by 3%, how much will he make per day?
- $261.62 (correct)
- $259.08 (incorrect)
- $264.16 (incorrect)
- $330.20 (incorrect)
A: $261.62

Q: Solve.

A rectangular garden has vegetables planted in a 35-ft by 20-ft area. The vegetables are surrounded by a 2-ft border of flowers. By what percent is the area for planting vegetables increased if the 2-ft border of flowers is removed?
- 13% (incorrect)
- 11.9% (incorrect)
- 33.7% (correct)
- 34.8% (incorrect)
A: 33.7%