WAEC 2019 · Paper 1 · Q46

The pie chart represents fruits on display in a grocery shop. If there are 60 oranges on display, how many apples are there?

Worked solution (try it first)

The angles add up to $360^\circ$ , so Orange is $360^\circ - (60^\circ + 100^\circ + 120^\circ) = 80^\circ$ .
$80^\circ$ stands for 60 oranges, so each degree is $\frac{60}{80} = \frac34$ of a fruit.
Apple is $120^\circ$ : $120 \times \frac34 = 90$ apples, option A.