Year 8 Ratios and Rates

A school has 315 boys, 378 girls and 63 teachers. The ratio of students to teachers is;

• 11 : 1

• 1 : 11

• 5 : 6

• 6 : 5

Find the ratio of the shaded area to the unshaded area in this

triangle.

• 3 : 5

• 8 : 5

• 5 : 3

• 5 : 8

• 50 : 2

• 2500 : 1

• 2 : 5

• 5 : 2

• 2 : 1

• 1 : 2

• 3 : 4

• 4 : 3

$750 is divided in the ratio 1 : 3 : 2. The smallest share is:

• $250

• $125

• $375

• $750

Callum fills his car with 28 litres of petrol at 142.7 cents per litre. His change from $50 cash is:

• $10

• $39.95

• $10.05

• $40

45 km/h is the same as:

• 0.25 m/s

• 25 m/s

• 12.5 m/s

• 75 m/s

A flag is created by enlarging the shaded rectangle as shown.

What is the length of the original rectangle?

• 20 cm

• 30 cm

• 40 cm

• 13 cm

On a map, Sydney and Melbourne are 143.2 mm apart.

If the cities are 716 km apart, what scale has been used?

• 1 : 5

• 1 : 5000

• 1 : 50 000

• 1 : 5 000 000