Mastering Rates, Ratios and Proportions

What is the ratio of 8 to 12 in simplest form?

• 2 to 3

• 4 to 5

• 1 to 2

• 3 to 4

If 3 apples cost $1.50, what is the cost of 1 apple?

• $0.50

• $0.25

• $0.75

• $1.00

A recipe requires 2 cups of flour for every 3 cups of sugar. What is the ratio of flour to sugar?

• 2:3

• 3:2

• 4:3

• 1:2

If 5 books cost $20, how much do 8 books cost at the same rate?

• $40

• $25

• $32

• $15

What is the unit rate of 60 miles in 2 hours?

• 40 miles per hour

• 20 miles per hour

• 50 miles per hour

• 30 miles per hour

If the ratio of boys to girls in a class is 4:5, how many boys are there if there are 20 girls?

• 20

• 18

• 12

• 16

A car travels 150 miles on 5 gallons of gas. What is the car's miles per gallon (mpg)?

• 30 mpg

• 35 mpg

• 40 mpg

• 25 mpg

If the ratio of cats to dogs is 3:2 and there are 12 cats, how many dogs are there?

• 6

• 4

• 10

• 8

What is the proportion of 7 to 21?

• 1/4

• 2/3

• 1/3

• 1/2

If a map has a scale of 1 inch to 50 miles, how many miles does 3 inches represent?

• 200 miles

• 100 miles

• 75 miles

• 150 miles