JAMB 2014 · UTME · Q43

The pie chart shows the monthly distribution of a man's salary on food items. If he spent ₦8,000 on rice, how much did he spend on yam?

Worked solution (try it first)

The angles add up to $360^\circ$ , so Yam is $360^\circ - (70^\circ + 80^\circ + 50^\circ) = 160^\circ$ .
Rice is $80^\circ$ for ₦8,000, so each degree is ₦100.
Yam: $160 \times 100 = 16\,000$ , so he spent ₦16,000, option C.