Test Index

JAMB Mathematics 2011 Paper

Question : 45

Total: 46

The pie chart shows the distribution of courses offered by students. What percentage of the students offer English?

Solution:

Concept:

The percentage for a sector in a pie chart is

\frac{\text{sector angle}}{360^\circ} \times 100

Explanation:

From the pie chart, the English sector has a central angle of

90^\circ

The total angle in a pie chart is

360^\circ

So the percentage of students who offer English is

\frac{90}{360} \times 100

This simplifies to

\frac{1}{4} \times 100 = 25\%

Answer:

25%

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