Quiz: Rates and Proportions

Sophie can type 128 words in 3 minutes. How many minutes will it take her to type 576 words?

• 12 minutes

• 13.5 minutes

• 15 minutes

• 18 minutes

A pet boarder keeps a dog-to-cat ratio of 5:2. If the boarder has room for 98 animals, then how many of them can be dogs?

• 35

• 50

• 70

• 60

Which set of ratios below is equivalent to 4:5? Be sure to show work and justify your thinking.

• A. 8 to 10, 10/15

• B. 8 to 10, 16/20

• C. 15/20, 20:25

• D. 40/50, 24:36

Marco is 6 feet 3 inches tall. There are 2.54 centimeters in 1 inch. What is Marco’s height in centimeters?

• 190.5 cm

• 195.58 cm

• 200.66 cm

• 210.82 cm

The distance between the school and the park is 6 km. There are 1.6 km in 1 mile. How many miles apart are the school and the park?

• 3.75 miles

• 3.5 miles

• 3.25 miles

• 3.0 miles

Three students wrote equivalent ratios on their dry erase boards. Which of these students wrote an equation that is true?

• A. Jasmine and Lian

• B. Noah and Lian

• C. Only Noah

• D. Only Lian

Harvard University accepts 6 students for every 100 applicants. How many students will be accepted if 850 apply for admission?

• 51

• 48

• 54

• 50

A college has 19 engineering students for every 81 students enrolled. If the college has 750 students, approximately how many are engineering students?

• A. 176

• B. 143

• C. 607

• D. 165

De’Shawn pays $8.16 for 12 pounds of sugar. What is the price per pound of sugar?

• $0.68

• $0.72

• $0.75

• $0.80

On a family road trip, Mr. Peters travels 130 miles in 2 hours. At this rate, how many miles will he travel in 30 minutes?

• 32.5 miles

• 65 miles

• 97.5 miles

• 130 miles