Ratio, Rates, and Proportion

A car travels 240 km in 3 hours. If the same car travels at a consistent rate, how far will it travel in 5 hours?

• 300km

• 360km

• 400km

• 420km

Two quantities are in direct proportion. When one quantity is 15, the other is 9. What is the second quantity when the first is 45?

• 18

• 24

• 27

• 36

Two quantities are in inverse proportion. When one is 12, the other is 8. What is the first quantity when the second is 6?

• 9

• 10

• 16

• 18

If a map uses a scale of 1 : 10 000, how many kilometers does 4 cm on the map represent in real life?

• 0.4km

• 4km

• 40km

• 400km

If 4 workers can complete a task in 12 days, how long would it take 6 workers to complete the same task, assuming they work at the same rate?

• 6 days

• 8 days

• 9 days

• 10 days

If the ratio of dogs to cats in a shelter is 5 : 8 and there are 40 cats, how many dogs are there?

• 20

• 25

• 30

• 32

In a proportional relationship, 5 : x = 15 :45 . What is the value of x?

• 5

• 10

• 15

• 20

If the ratio of men to women in a group is 3 : 4 and there are 36 women, how many men are there?

• 18

• 24

• 27

• 48

If the ratio of three numbers is 4 : 5 : 6 and their sum is 90, what is the largest number?

• 24

• 30

• 36

• 40

The ratio of boys to girls in a classroom is 3 : 5. If there are 40 students in total, how many boys are there?

• 3

• 6

• 9

• 15