Last year the enrollment at Clark Middle School was 465 students. This year the enrollment is 525 students. What is the percent of increase? Round to the nearest percent.

In a library there are 120 new books. 35 books are fictions, 25 books are biography, and the rest are children books. What percentage of the new books are children books?

What is 30% of 450?

82% of what is 95?

Jason spends $450 for transportation. This is 25% of his monthly salary . How much money did he earn each month?

While mining, John found a large metal bar that weighed 25 ounces. John was also able to determine that the bar had 15 ounces of lead. What percent of the weight of the bar was lead?

A jogging route is 10km long. Zaman has jogged 4km. What percentage of the route has Zaman jogged?

What percent of 96 is 88?

During May, Javier swims 80 laps each weekday. During June he swims 60 laps each weekday. What is the percent of change from May to June? Is it an increase or decrease?

Alex buys an antique car for $45,800, restores it, and then sells it for $61,830. Find the percent of change. Is it an increase or a decrease?

Fifty-two of 80 marbles are red. What percent of the marbles are red?

A cookie basket contains 20 chocolate chip cookies and 24 oatmeal raisin cookies. What is the ratio of chocolate chip cookies to oatmeal raisin cookies?

Run three miles in 30 minutes. What is the unit rate?

What number should go in the blank to make the ratios equivalent?

1 : 5

_?_ : 20

Find the unit rate $6.80 for 9 muffins

A 6-gram package of fruit snacks contains 45 pieces. How many pieces would you expect in a 10-gram package?