G9 (IGCSE) - Ratio and Proportion

A boat travels at an average speed of 15km/h for 1 hour. Calculate the distance it travels in one hour.

(a)  

A ruler 30cm long is broken into two parts in the ratio 8:7. How long is the longer part?

• 16cm

• 16m

• 14cm

• 2cm

A recipe needs 400g of flour to make 8 cakes. How much flour would be needed in order to make 24 cakes?

• 111g

• 120g

• 1200kg

• 1.2kg

To make 6 jam tarts, 120g of jam is needed. How much jam is needed to make 10 tarts?

• 200kg

• 0.2kg

• 72g

• 720g

The scale of a map is 1 : 25 000. Two villages are 8cm apart on the map. How far apart are they in real life? Give your answer in kilometres.

• 2km

• 200000cm

• 2000m

• 0.2km

The scale of a map is 1 : 25 000. The distance from a village to the edge of a lake is 12km in real life. How far apart would they be on the map? Give your answer in centimetre.

• 48cm

• 4.8cm

• 0.00048cm

• 0.48m

Divide 3 tonnes in the ratio 2:5:13.

• 300kg, 750kg, 1.95 tonnes

• 0.3 tonnes, 7.5 tonnes, 1950kg

• 300 tonnes, 750 tonnes, 1950 tonnes

• 0.3 tonnes, 0.75 tonnes, 195 kg

Give your answer in the box below.

(a)  

Choose the correct answer:

• y=kx

• y = k + x

• y = k - x