Ratios and Proportions

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

• 1:2

• 3:4

• 2:3

• 4:5

If 3/4 of a number is 12, what is the number?

• 20

• 16

• 14

• 10

Identify the equivalent ratio of 2:5.

• 3:7

• 4:10, 6:15

• 5:12

• 8:20

If a recipe requires 2 cups of flour for every 3 cups of sugar, how much flour is needed for 9 cups of sugar?

• 3 cups of flour

• 6 cups of flour

• 4 cups of flour

• 8 cups of flour

Convert the ratio 5:8 into a fraction.

• 10/13

• 8/5

• 5/8

• 5:8

If 4: x = 12: 18, what is the value of x?

• 4

• 6

• 8

• 10

Which of the following is an equivalent ratio to 6:9? (a) 2:3 (b) 4:5 (c) 1:2

• 7:8

• 2:3

• 5:6

• 3:4

A map has a scale of 1:100,000. If two cities are 5 cm apart on the map, what is the actual distance between them?

• 5 km

• 1 km

• 10 km

• 2 km

If the ratio of boys to girls in a class is 3:4 and there are 21 boys, how many girls are there?

• 28

• 30

• 32

• 24

Convert the fraction 3/5 into a ratio.

• 3:5

• 3/5

• 5:3

• 1:2