JAMB - Mathematics (2018 - No. 3)
The pie chart shows the monthly expenditure of a public servant. The monthly expenditure on housing is twice that of school fees. How much does the worker spend on housing if his monthly income is N7200?
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2000
3000
4000
Uitleg
Let the angle for school fees = x°
Then Housing = 2x°
120° + 90° + x° + 2x° = 360°
3x° = 150° \(\implies\) x° = 50°.
Amount spent on housing = \(\frac{100}{360} \times 7200\)
= N2000.