The dual bar chart shows the hair colour of boys and girls in a year group. What fraction of the students are girls? Give your a
nswer in its simplest form
2 answers:
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The angle subtended by the women voters are 100° more than the angle subtended by the men voters.
- The total number of voters are <u>10080 voters</u>
Reasons:
The angle subtended by the men on the pie chart = 130°
The number of women = 2800 + The number of men
Therefore;
Angle subtended by the women voters on the pie chart = 360° - 130° = 230°
The difference between the angle representing women and the angle
representing men = 230° - 130° = 100°
Therefore;
100° = 2800
Which by common ratios gives;
100 × Total number of voters = 2800 × 360
The total number of voters = <u>10080</u>
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