Question : The line chart given below shows the income and expenditure of a company in five years.
Saving = Income – Expenditure
What is the difference between the average income and average saving in years C and D together?
Option 1: 450
Option 2: 250
Option 3: 150
Option 4: 350
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Correct Answer: 150
Solution :
Income of C = 600
Income of D = 400
Expenditure of C = 200
Expenditure of D = 100
Average income of C and D together = $\frac{(600 + 400)}{2}$ = 500
Saving = Income - Expenditure
Saving of C = 600 - 200 = 400
Saving of D = 400 - 100 = 300
Average saving of C and D together = $\frac{(400 + 300)}{2}$ = 350
$\therefore$ The difference between the average income and average savings in years C and D together = 500 - 350 = 150
Hence, the correct answer is 150.
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