Unit 2 Proportionality

Name______Period ______

Unit 2 – Proportionality

Quiz Review

Remember, these are just examples of the skills and concepts you will need to know for your quiz. It is important to study all class work and homework, in addition to this review, in order to be adequately prepared for your quiz.

Solve each of the following.

1) = 2) = 3) =

4) = 5) = 6) =

7) The Springfield School band has 300 sweatshirts to sell at a fund-raiser. A survey shows that 2

out of 7 students in the school would purchase a sweatshirt. If there are 910 students in the

school, predict how many students would buy a sweatshirt. Will the band probably sell all the

sweatshirts? Support your answer.

8) A recipe for hot chocolate says you should mix 2 tablespoons of powder with 1 cup of hot

water. If you want to make 9 cups of hot chocolate, how much powder do you need? Support

your answer.

10) Mrs. Campbell poured out 5 red and 7 green candies. If this rate continues, how many red

candies would there be if there are 240 candies? Support your reasoning.

In 11 -13, determine which is a better buy.

11) Salsa: 16 ounces for $3.36 or 24 ounces for $4.80

12) Rice: 28 ounces for $2.88 or 32 ounces for $3.36

13) Pickles: 16 ounces for $1.92 or 32 ounces for $3.84

14) In 2010, the average television viewer watched about 29 hours of television in 7 days.

About how many hours of television did the average viewer watch in 28 days? Support your

answer.

15) A recipe that makes 4 pounds of potato salad uses 6 potatoes. How many pounds of potato

salad can be made from 9 potatoes? Support your answer.

16) Your printer takes 2 minutes to print a 16-page document. How long will it take to print a

50-page document? Support your answer.

17) The ratio of female to male shoppers ata department store has been found tobe 10 to 9. If

1,188 male shoppers wereat the store one Saturday, how manyshoppers were there in all

that day? Support your answer.

18) A bag has 120 red and blue marbles. If the ratio of red to blue marbles is 3:5, how many red

marbles are in the bag? Support your reasoning.

19) A company wants to hire the person who types the most words per minute. Liz types for 9 minutes

and types 648 words. Brad types 816 words in 12 minutes. Brad claims that since he typed more

words, he will be hired. Is Brad correct? Support your reasoning.

20) The scale on a map states that 1 in = 25 miles. If the distance between two cities is 3.5 inches, how

far apart are the cities? Support your reasoning.