(a) Items Percentage(%) Degree in pie chart Pension 5 \(\frac{5}{100} \times 360^\circ = 18^\circ\) Income tax 25 \(\frac{25}{100} \times 360^\circ = 90^\circ\) Food 40 \(\frac{40}{100} \times 360^\circ = 144^\circ\) Transport 10 \(\frac{10}{100} \times 360^\circ = 36^\circ\) Rent 12.5 \(\frac{12.5}{100} \times 360^\circ = 45^\circ\) Others 7.5 \(\frac{7.5}{100} \times 360^\circ = 27^\circ\) 100 360^\circ A pie- chart showing the monthly contributions and expenditure pattern of an employee in 1999. (b)(i) \(360^\circ = N10,800.00\) \(\text{Pension} - 18^\circ = \frac{18}{360} \times N10,800\) = \(N540\) (ii) \(360^\circ = N10,800.00\) \(\text{Income tax} - 90^\circ = \frac{90}{360} \times N10,800\) = \(N2700\) (c) The percentage sum of pension and income tax = (5 + 25)% = 30% Take home pay = 100% - 30% = 70% = \(\frac{70}{100} \times N10,800\) = \(N7560\)