Topic 12 Review

What ratios are proportional to 20/50? 

• 6/8
• 8/20
• 25/55
• 5/2

What is 70% of 20? 

• 14%
• 11
• 14
• 13%

Mr. Oliver states that at Jones Middle School 122 students play at least one sport. If this is 40% of the students at JMS, how many total students do we have? 

• 305 students
• 48 students 
• 244 students
• 305%

What does the ratio 4 : 5 look like as a percent?

• 76%
• 80
• 80%
• 76

55% of what number is 22?

• 40%
• 22%
• 45
• 40

Are the ratios 24/42 and 40/90 proportional? Why?

• Yes, because they don't simplify to the same ratio.
• No, because they don't simplify to the same ratio.
• No, because they simplify to the same ratio. 
• Yes, because they simplify to the same ratio. 

The equation y = 37/4x describes the number of y miles that an airplane travels in x minutes.
What is the constant speed of the airplane in miles per hour? 

• 555 miles per hour
• 9.25 miles per hour
• 6.49 miles per hour
• 545 miles per hour

Your friend has a coin collection.  In it, 36/50 are quarters.  What percent of the coins are NOT quarters?

• 72%
• 28%
• 72
• 28

A basketball player makes 63 out of 100 free throws.  What percent of free throws were not made?

• 27%
• 54%
• 37%
• 63%

On a local sports team, 20% of 55 players were left-handed.  How many left handed players were there?  

• 11%
• 11 players
• 275 players
• 55%