Groups and Percent

Lisa's little brother weighed 8 pounds when he was born. He now weighs 36 pounds. What is the percent increase in the boy's weight?

• 350%

• 4%

• 40%

• 78%

It costs a florist $14.50 to grow a dozen roses. She sells a bouquet of a dozen roses for $24.99. What is the markup (percent increase) to the nearest percent?

• 72%

• 42%

• 172%

• 58%

Miss Sylvie miscounted and thought she saw 33 children on the bus. When she counted again, she realizes there are actually only 30 students on the bus. What is her percent error?

• 10%

• 9%

• 90%

• 91%

What is 25% of 80?

• 15

• 30

• 20

• 40

Calculate the percent increase if a price increases from $50 to $70.

• 40%

• 30%

• 60%

• 50%

A shirt originally costs $40, but it is now on sale for $32. What is the percent decrease?

• 20%

• 30%

• 25%

• 15%

Solve the percent proportion: 15 is what percent of 75?

• 25%

• 30%

• 40%

• 20%

A car is sold for $12,000, which is 80% of its original price. What was the original price?

• $16,000

• $14,000

• $10,000

• $15,000

The population of a city was 500,000 last year. This year, it increased to 550,000. What is the percent increase in population?

• 5%

• 15%

• 20%

• 10%

A jacket is on sale for 30% off the original price of $120. What is the sale price?

• $90

• $100

• $84

• $36