Ratios, Unit Rate, Percent Review

Which ratio is equivalent to 12:20

• 20:12

• 2:3

• 3:5

• 3:10

Sally got 22 questions wrong on her quiz that had 40 questions on it. What is the percentage of the questions she got wrong?

• 45%

• 55%

• 32%

• 95%

56 is 35% of what number?

• 70

• 160

• 62.5

• 16

A store sees 120 customers in 8 hours. What is the unit rate (in customers per hour)?

• 16 customers per hour

• 15 customers per hour

• 12 customers per hour

• 20 customers per hour

What is the ratio of blue circles to red circles? Choose two.

• 6 to 5

• 6:5

• 5 to 6

• 5:6

• 4:5

Reggie makes perfect purple paint with a ratio of 3 parts red to every 4 parts blue. If he uses 20 parts blue, how many parts of red does he need?

• 10

• 15

• 30

• 20

Ji Li's trail mix recipe calls for 2 cups of granola for every 5 tablespoons of M&M's candies. Ji Li only has 30 tablespoons of M&M's candies. How many cups of granola will she need?

• 12

• 10

• 14

• 8

What is 80% of 70?

• 35

• 56

• 20

• 48

Kaitlyn got 17 questions correct on a twenty question test. What percent of the questions did she get incorrect?

• 50%

• 85%

• 15%

• 30%

Kianna can run 100 yards in 20 seconds. What is her unit rate in yards per second?

• 5 yards / 1 second

• 10 yards / 1 second

• 20 yards / 1 second