Mathematics Form 1 Chapter 4 - Ratios, Rates and Proportions

Solve the ratio 9:15.

• 3:6

• 3:5

• 4:5

• 2:5

Answer explanation

To simplify the ratio 9:15, divide both numbers by their greatest common factor, which is 3. This gives 3:5, so the correct answer is 3:5.

Solve the proportion 2/3 = x/9 algebraically.

• 6

• 4

• 10

• 7

Apply the rate of 60km per hour to calculate the distance traveled in 3 hours.

• 200km

• 120km

• 180km

• 150km

If a recipe require 2 cups of flour and 1 cup of sugar, what is the ratio of flour to sugar?

• 2:2

• 3:1

• 2:1

• 1:2

Determine if the ratios 3:4 and 6:8 are equivalent.

• No

• Maybe

• Sometimes

• Yes

Find the missing value in the proportion 5/8 = 10/x.

• x = 25

• x = 12

• x = 20

• x = 16

A car travels 240km in 4 hours. What is the rate of speed in km per hour?

• 40km per hour

• 80km per hour

• 120km per hour

• 60km per hour

If a map scale is 1cm represents 5km, how many cm on the map represent 25km?

• 3cm

• 7cm

• 10cm

• 5cm

Simplify the ratio 18:24 to its simplest form.

• 2:3

• 6:8

• 5:7

• 3:4

Solve the proportion 3/5 = 9/x algebraically.

• x = 15

• x = 10

• x = 7

• x = 12