The table shows the monthly contributions and expenditure pattern of an employee in 1999.
| Item | Percentage |
| Pension | 5 |
| Income Tax | 25 |
| Food | 40 |
| Transport | 10 |
| Rent | 12.5 |
| Others | 7.5 |
(a) Draw a pie chart to illustrate the data.
(b) If the employee’s gross monthly salary was N10,800.00, calculate (i) the pension contribution of the employee ; (ii) the income tax paid by the employee.
(c) If the pension contribution and income tax were deducted from the gross monthly salary, before payment, calculate the take- home pay of the employee.
Explanation
(a)
| Items | Percentage(%) | Degree in pie chart |
| Pension | 5 | (frac{5}{100} times 360° = 18°) |
| Income tax | 25 | (frac{25}{100} times 360° = 90°) |
| Food | 40 | (frac{40}{100} times 360° = 144°) |
| Transport | 10 | (frac{10}{100} times 360° = 36°) |
| Rent | 12.5 | (frac{12.5}{100} times 360° = 45°) |
| Others | 7.5 | (frac{7.5}{100} times 360° = 27°) |
| 100 | 360° |
A pie- chart showing the monthly contributions and expenditure pattern of an employee in 1999.
(b)(i) (360° = N10,800.00)
(text{Pension} – 18° = frac{18}{360} times N10,800)
= (N540)
(ii) (360° = N10,800.00)
(text{Income tax} – 90° = 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)