The pie chart above shows the expenditure of a family whose income is N30,000. If...

JAMB 2006

The pie chart above shows the expenditure of a family whose income is N30,000. If the expenditure on food is twice that on housing and that on school fees is twice that on transport, how much does the family spend on food?

A. N 28 000
B. N 25 500
C. N15 000
D. N 12 500

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Correct Answer: Option D

Explanation

Expenditure on housing = x
Expenditure on food = 2x
Expenditure on school fees = 90^o
Expenditure on transport = 45^o
x + 2x + 90 + 45 = 360^o
3x + 135 = 360^o
3x = 360 - 135
3x = 225
x = 225/3 = 75^o
∴∠ for food = 2x = 2 * 75
= 150
360^o = N30,000
1^o = ?
1^o = 30,000/360
150^o = (30000/360) * (150/1)
= N12500

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