Ratios and Proportions

What is a Ratio?

• A comparison of two quantities 
• To multiply two fractions 
• A number over another number
• Two decimals that can be multiplied

Simplify the ratio of
35 : 14

• 5 : 2
• 2 : 5
• 3 : 1
• 35: 14

88 students for 4 classes
How many students per class?

• 22 students per class
• 22 classes per student
• 25 students per class
• 25 classes per student

Which is NOT equivalent to 3:5?

• 15:25
• 9:15
• 21:28
• 30:50

Mrs. Edgar bought an eight pack of bottled water for $4.00.  What was the unit price for the water?

• $32.00
• $0.50
• $3.20
• $5.00

At a summer camp, there are 40 girls out of 60 campers.  What is the ratio written in simplest form?

• 2/3
• 20/30
• 40/60
• 10/60

Rebecca is playing her favorite video game, Starlight: The Space Explorer. On the first level, she earned 3 energy points and 8 stars. On the second level, she earned 2 energy points and 5 stars. Did Rebecca earn the same ratio of energy points to stars on both levels?

• yes

• no

Trey and George are competing in a basketball free throw competition. Trey's ratio of free throws made to free throws missed is 6 to 9. George's ratio of free throws made to free throws missed is 12 to 18. Who has the better ratio for making free throws?

• Trey

• George

• They are the same.