Chapter 4: Ratios, Rates & Proportions (F1)

A class of 32 students has 12 girls. What is the ratio of girls to boys?

• 3:5

• 5:8

• 5:3

• 8:5

Jim can run a mile in 5 minutes and 50 seconds.

John can run a mile in 6 minutes and 40 seconds.

What is the ratio of Jim's time to John's time?

• 7:8

• 5.5 : 6.4

• 55:64

• 8:7

The distance between two towns on a map is 5 cm. If the real distance between the two towns is 25 km, what is the scale of the map?

• 1:500,000

• 1:5,000,000

• 1:50,000

• 1:5,000

A real horse is 1.8 m high. A statue of the horse is 3 m high. What is the ratio of the height of the horse to the height of the statue?

• 3:5

• 2:3

• 6:1

• 5:3

The tallest building in the world, the Burj Khalifa in Dubai, is 828 meters tall. A model of the building is made using the ratio 1 : 5,000.

How high is the model in centimeters (cm)?

• 16.56cm

• 1,656cm

• 165.6cm

• 1.656cm

A recipe for pastry has flour, butter and water mixed in the ratio 24 : 8 : 3

If Fiona follows the recipe and uses 3 cups of flour, how many cups of butter should she use?

• 1 cup

• $\frac{1}{3}$ cup

• $\frac{3}{8}$ cup

• $\frac{3}{4}$ cup

∠AOC is a right angle which is 180° and the ratio ∠AOB : ∠BOC = 2 : 3

What is the size of angle BOC?

• 36°

• 54°

• 60°

• 45°

What is the ratio of yellow triangles to all triangles?

• $\frac{2}{5}$

• $\frac{3}{5}$

• $\frac{2}{3}$

• $\frac{3}{2}$

What fraction of the apples are orange?

• $\frac{1}{10}$

• $\frac{1}{2}$

• $\frac{1}{3}$

• $\frac{1}{15}$

The ratio of black cars to colored cars in the car park is 3 : 7

What fraction of the cars in the car park are black?

• $\frac{3}{10}$

• $\frac{7}{10}$

• $\frac{3}{7}$

• $\frac{7}{3}$