Gasoline (petrol)

2 marks · Easy

A 12 kg gas cylinder is used for cooking in a household kitchen. The gas inside is refinery gas (LPG), which is a typical use of refinery gases.

Suppose each meal uses 0.5 kg of LPG. Calculate the maximum number of meals that can be cooked with a full 12 kg cylinder.

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24 (±0)

Common mistakes: dividing 0.5 by 12; forgetting to divide; multiplying instead of dividing

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Marking points

M1 · 1 mark · Correct process: divides 12 kg by 0.5 kg per meal

A1 · 1 mark · Correct answer of 24 meals (follow-through)

Worked solution

To find the number of meals:

So, the maximum number of meals that can be cooked is 24.