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...

Assessment: WAEC SSCE - General Mathematics - 2022 Subject: General Mathematics

Question 1 Report

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 salary.

(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) amount saved each month.

Answer

(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

Open photo

(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

Read lesson note on Percentages (WAEC)

Read lesson note on Statistics (WAEC)

Read lesson note on Financial Arithmetic (WAEC)

Answer Details

(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

Open photo

(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

Read lesson note on Percentages (WAEC)

Read lesson note on Statistics (WAEC)

Read lesson note on Financial Arithmetic (WAEC)

Percentages

Financial Arithmetic

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