Determine the percentage of electricity generated in nuclear power stations that day.
Use data from Figure 6.
How to approach this question
1. A pie chart represents a total of 100%.
2. Read the percentages for all the given sectors from the chart: Solar, Coal, Gas, and Other.
3. Add these percentages together.
4. Subtract the total from 100% to find the missing percentage for Nuclear.
Full Answer
Sum of other percentages = 24% (Solar) + 23% (Coal) + 28% (Gas) + 3% (Other) = 78%
Percentage for Nuclear = 100% - 78% = 22%
A pie chart shows parts of a whole, and the total must add up to 100%.
The percentages given are:
- Solar: 24%
- Coal: 23%
- Gas: 28%
- Other: 3%
First, sum these percentages:
Total known = 24 + 23 + 28 + 3 = 78%
The remaining part of the pie chart must be Nuclear. To find its value, subtract the known total from 100%:
Nuclear % = 100% - 78% = 22%
Common mistakes
✗ Simple addition or subtraction errors.
✗ Misreading the percentages from the chart.
✗ Forgetting to subtract from 100 and giving 78% as the answer.
Expert