Ratio Quiz

Simplify the ratio 12:18.

• 2:3

• 8:12

• 6:9

• 4:6

If the ratio of boys to girls in a class is 3:5 and there are 24 students in total, how many boys are there?

• 18

• 9

• 12

• 15

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

• 2:2

• 3:2

• 2:3

• 1:3

If the ratio of the lengths of two sides of a rectangle is 3:5 and the length is 15 cm, what is the width of the rectangle?

• 25

• 30

• 10

• 20

Simplify the ratio 4:6:8.

• 3:4:5

• 1:2:3

• 5:6:7

• 2:3:4

A bag contains 5 red marbles, 3 blue marbles, and 2 green marbles. What is the ratio of red marbles to the total number of marbles?

• 3/10

• 5/10

• 1/2

• 2/5

If the ratio of the prices of two books is 2:5 and the first book costs $10, what is the cost of the second book?

• $5

• $12

• $7

• $2

A recipe calls for 1 cup of milk and 2 cups of flour. What is the ratio of milk to flour?

• 1:2

• 3:2

• 1:1

• 2:1

If the ratio of the perimeters of two similar triangles is 3:4 and the perimeter of the first triangle is 15 cm, what is the perimeter of the second triangle?

• 12

• 10

• 20

• 18

Simplify the ratio 9:12:15.

• 1:2:3

• 3:4:5

• 2:3:4

• 6:8:10