Ratio and Proportion

Hilbert burns 120 calories per 30 minutes of weight training.  Complete the table to chart his calorie expenditure for different amounts of time. What is value of b?

• b= 80

• b= 40

• b= 4

• b= 240

If there are 5 boys and 7 girls, write the ratio of girls to students

• 5 is to 7

• 7 is to 5

• 5 is to 12

• 7 is to 12

Which ratio is equivalent to 3:4?

• 6:10

• 5:7

• 9:12

• 2:3

Which ratio is NOT equivalent to 4:7?

• 8:14

• 12:21

• 16:28

• 5.8:7.5

The ratio of dogs to cats at a shelter is 3:5. Which is an equivalent ratio?

• 6:10

• 9:16

• 20:12

• 25:15

Which ratio is equivalent to 7:9?

• A) 17:19

• B) 21:29

• C) 28:36

• D) 36:48

The ratio of pencils to erasers is 2:3. Which of these is an equivalent ratio?

• A) 4:5

• B) 6:19

• C) 8:12

• D) 10:15

A recipe calls for 3 cups of flour to make 48 cookies. Is this a proportional relationship?

• Yes, the ratio is consistent

• No, the ratio changes

• Not enough information

• The relationship depends on the baker

The ratio of students to teachers in a school is 25:1. If there are 250 students, how many teachers are there?

• 10 teachers

• 15 teachers

• 12 teachers

• 8 teachers

The ratio of red to blue marbles in a bag is 2:3. If there are 10 red marbles, how many blue marbles are there?

• 15 blue marbles

• 12 blue marbles

• 18 blue marbles

• 20 blue marbles