Item
food & drinks
fuel
rent
building project
education
savings
Percentage%
35
7.5
1.0
15
17.5
x
The table shows the monthly expenditure (in percentages) of Mr. Okafor's salary.
(a) Calculate the percentage of Mr. Okafor's salary that was put into savings.
(b) Illustrate the information on a pie chart.
(c) If Mr. Okafor's annual gross salary is $28,800.00 and he pays tax of 12%.
Calculate; (i) his monthly tax; (ii) the amount saved each month.
Verified Correct Answer: .
Step-by-Step Mathematical Solution
(a) 35 + 7.5 + 10 + 15 + 17.5 + x = 100
85 + x = 100.
x = 100 - 85
x = 15
items
%
degree
food & drinks
35
\(\frac{35}{100} * 360\) = 126º
fuel
7.5
\(\frac{7.5}{100} * 360\) = 27º
rent
10
\(\frac{10}{100} * 360\) = 36º
building project
15
\(\frac{15}{100} * 360\) = 54º
education
17.5
\(\frac{17.5}{100} * 360\) = 63º
savings
15
\(\frac{15}{100} * 360\) = 54º
(c) income tax = \(\frac{12}{100} * 28,800\) = $3,456.00
Monthly tax = \(\frac{3456}{12}\) = $288.00
(ii) Monthly net salary = \(\frac{1}{12} (288 - 3456)\) = $2,112.00
Amount saved each month = \(\frac{15}{100} * 2112\) = $316.80
Source: Myschool Past Questions Archive (Record #65866)