Unit 7 Proportional Reasoning
Study Guide
Name_____________________________________
Date_____________________________
1.
2. The price of a newly released movie is $21.89 at Wal-Mart. If the sales tax is 7%, about how much
will its total cost be?
3. Ms. Vasquez used 7 cups of flour to make 4 loaves of bread. How many loaves of bread can she
make with 30 cups of flour?
4. To make purple paint, a painter mixes blue paint and red paint in the ratio five to three. If he used
30 gallons of blue paint, how much red paint did he use?
5. Jasmine is building birdhouses. It takes her 4 hours to build 7 birdhouses. Which of the following is
an equivalent rate?
a) 10 hours to build 12 birdhouses
b) 12 hours to build 21 birdhouses
c) 16 hours to build 25 birdhouses
d) 20 hours to build 52 birdhouses
6. Mr. Carter bought 12 pounds of oranges for $8.75. Which of the following represents the same
price per pound?
a)
b)
c)
d)
5 pounds of oranges for $4.22
10 pounds of oranges for $7.99
15 pounds of oranges for $10.12
20 pounds of oranges for $14.58
7. Kelsey picks out a shirt that is priced $29.99. It is on the clearance rack on sale for 70% off of the
marked price. What is the sale price of the shirt?
8. Write each decimal as a percent.
a) 0.56 ________
b) 0.092 ________
c) 0.4 _________
d) 0.735 _________
9. Write each fraction as a decimal.
4
= ____________
5
4
b)
= ____________
25
7
= ___________
16
5
d) = ___________
8
a)
c)
10. Write each percent as a fraction in simplest form.
a) 50% ______________
c) 34% _______________
b) 8% _______________
d) 12% _______________
11. Find 62% of 50.
12. Find 15% of 85.
13. Find the missing value in each proportion.
a)
15 p

5
3
b)
6
4

z 28
c)
k 6

6 2
d)
9 45

5
x