Ch8 Review Problems

Compute 40% of 20% of 10% of 80,000 !

18% of 50 is what percent of 24?

If there are 240 boys in a school with a total of 960 students, then what percent of the students are girls?

The grading scale shown to the right is used at Jones Junior High. The fifteen scores in Mr. Freeman’s class were:

89, 72, 54, 97, 77, 92, 85, 74, 75, 63, 84, 78, 71, 80, 90.

In Mr. Freeman’s class, what percent of the students received a grade of C?

The glass gauge on a cylindrical coffee maker shows there are 45 cups left when the coffee maker is 36% full.

How many cups of coffee does it hold when it is full?

During the softball season, Judy had 35 hits. Among her hits were 1 home run, 1 triple, and 5 doubles. The rest of her hits were singles. What percent of her hits were singles?

Any quarter has a face value of %0.25. An eccentric collector offers to buy state quarters for 600% of their face value. At that rate, how much will Larry receive for his collection of all 50 state quarters?

Katie wants a fancy new music player that costs $300. Katie can buy it in her home state and pay 8% sales tax, or she can drive to a neighboring state and pay only 5% sales tax. How much does Katie save on the player if she drives to the neighboring state?

Sally is playing basketball. After she takes 20 shots, she has made 55% of her shots. After she takes 5 more shots, she raises her percentage of shots made to 56%. How many of the last 5 shots did she make?

200 students enrolled in the Percentages 101 class in 2010. A 20% increase in enrollment is expected each year. How many students are expected to enroll in the class in 2012?