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 year C and D together ?
Answer & explanation
Correct answer: option 3
Average income of C & D = \(\frac{600 + 400}{2}\) = 500
Saving of C = 600 - 200 = 400 & Saving of D = 400 - 100 = 300
Average saving of C & D = \(\frac{400 + 300}{2}\) = 350
Required Difference = 500 - 350 = 150