Proportions, Ratios, and Scale Factor Quiz

• 9

• 7

• 5

• 12

Find the scale factor. Assume the left shape is the original.

• 12/15

• 12/32

• 15/32

• 1.25

A recipe calls for 2 cups of flour to make 24 cookies. How many cups of flour are needed to make 36 cookies?

• 3 cups

• 1.5 cups

• 2.5 cups

• 4 cups

If 5 trucks can transport 200 tons of goods, how many tons can 8 trucks transport?

• 250 tons

• 400 tons

• 150 tons

• 320 tons

A map has a scale of 1 inch represents 5 miles. If two cities are 3.5 inches apart on the map, how far are they from each other in reality?

• 10 miles

• 3.5 miles

• 17.5 miles

• 25 miles

An equilateral triangle is dilated with a scale factor of 3. If the side length of the original triangle was 4 cm, what is the side length of the new triangle?

• 8 cm

• 12 cm

• 5 cm

• 16 cm

• x = 21

• x = 18

• x = 12

• x = 10

If the ratio of red pens to blue pens in a class is 3:5, and there are 24 red pens, how many blue pens are there?

• 15

• 40

• 30

• 20

A recipe calls for 1.5 cups of sugar to make 12 muffins. How many cups of sugar are needed to make 20 muffins?

• 2.5 cups

• 3 cups

• 1 cup

• 2 cups

What is the scale factor? Assume the left shape is the original.

• 2

• 0.5

• 2.5

• 0.4