Test Prep Ratios and Proportions

10 students want hotdogs for lunch and 26 want hamburgers.  What is the ratio of the number of students who want hot dogs to the number of students who want hamburgers?

• 26:10

• 10:26

• 10:36

• 25:36

Simplify the ratio 12:3

• 1:2

• 6:1

• 4:1

• 1:4

There are 13 male teachers and 5 female teachers at Margo's School.  What is the ratio of female teachers to male teachers?

• 5:13

• 13:5

• 18:10

• 26:5

There were 5 ice cream cones for every 3 brownies sold at the ice cream shop. If there were 24 brownies sold, how many ice cream cones were sold?

• 8

• 15

• 40

• 29

• 3
• 5.3
• 1.08
• 27

Solve the proportion.

• k=5

• k=3.3333333

• k=60

• k=90

What is a Ratio?

• Is a comparison of two quantities 

• To multiply two fractions 

• A number over another number

• Two decimals that can be multiplied

The ratio of pass to fail in PE class is 5:1.  If there are 90 students in PE, how many are passing?

• 75 students are passing

• 75 are failing

• 15 students are passing 

• 15 students are failing

Solve for x

• x=6

• x =1/6

• x = 7

• x=9

A scale drawing of a billboard uses the scale 4 cm:9 ft. The length of the billboard in the drawing is 11 cm. How long is the actual billboard?

• 13 ft

• 20.75 ft

• 24.75 ft

• 22 ft