Gasoline (petrol)
4 marks · NormalThe table shows data about the use of refinery gases in different countries.
| Country | Percentage of refinery gases used for domestic heating (%) | Percentage used for cooking (%) |
|---|---|---|
| Country X | 55 | 30 |
| Country Y | 70 | 20 |
| Country Z | 40 | 50 |
Which country uses the greatest percentage of refinery gases for cooking?
Calculate the combined total percentage of refinery gases used for domestic heating and cooking in Country Y.
Suggest one reason why the percentages used for heating and cooking might differ between countries.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
Show answer
(a) Country Z
(b) 90 %
(c) Possible reasons: Different climate (colder climates may use more for heating); different availability of other fuels; cultural cooking habits; infrastructure differences.
Common mistakes: Wrong addition of percentages; Mixing up countries
Show mark scheme and worked solution
Marking points
B1 (a) · 1 mark · Identifies Country Z as the country with the highest percentage used for cooking.
B2 (b) · 1 mark · Correctly adds percentages for Country Y (70 + 20 = 90%).
B3 (c) · 2 marks · Gives a valid suggestion, e.g., relates to climate, availability of fuels, or cultural/use differences.
Worked solution
a) Country Z uses the greatest percentage for cooking (50%).
b) In Country Y: 70% (heating) + 20% (cooking) = 90%
c) The percentages might differ due to climate (colder countries using more for heating); differences in access to other fuels; or varying cooking practices.