JAMB 1988 · UME · Q47

Statistics: data & averages

In a class of 150 students, the sector of a pie chart representing the students offering Physics has angle $12^\circ$ . How many students are offering Physics?

Worked solution (try it first)

The Physics sector is $\frac{12}{360}$ of the circle, so it is $\frac{12}{360}$ of the class.
$\frac{12}{360} \times 150 = \frac{150}{30}$
$= 5$ students, option D.

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