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?
1000
2000
3000
4000
Vysvětlení
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.