Angle of sector:
\(Food = \frac{30}{100} \times 360° = 108°\)
\(Rent = \frac{18}{100} \times 360° = 64.8°\)
\(\text{Car Maintenance} = \frac{25}{100} \times 360° = 90°\)
\(Savings = \frac{12}{100} \times 360° = 43.2°\)
\(Taxes = \frac{5}{100} \times 360° = 18°\)
\(Others = \frac{10}{100} \times 360° = 36°\)
(a)
(b) Annual Salary = N60,000.00
\(\therefore Savings = N(\frac{12}{100} \times 60,000) = N7,200\)