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JAMB Economics 2022 Paper

Question : 76

Total: 82

The pie chart above represent the total population of a school of 1,200. The shaded area of 60∘ shows the population of the underaged pupils.

Solution:

Concept:

A pie chart divides the total population into angles whose sum is

360^\circ

Explanation:

The underaged pupils are represented by

60^\circ

Therefore, matured students occupy

360^\circ - 60^\circ = 300^\circ

This fraction of the total angle is

\frac{300}{360} = \frac{5}{6}

Total school population is

1200

Matured students

= \frac{5}{6} \times 1200 = 1000

Answer:

The population of matured students is

1000

, i.e. Option C.

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