Expenditures of company B in 1996 and 1997 are Rs. 12 lakhs and Rs. 14.5 lakhs respectively. What was the total income of company B in 1996 and 1997 together (in lakh rupees)?

Expenditure of company B in 1996 is 12 lakhs
Profit percentage (from the graph) is 35%
Let the income generated be $$I$$.
So, $$\frac{I-12}{12}=\frac{35}{100}$$
Or $$20I - 240 = 84$$
So, $$I = 16.2$$ lakhs

Expenditure of company B in 1997 is 14.5 lakhs
Profit percentage (from the graph) is 50%
Let the income generated be $$I$$.
So, $$\frac{I-14.5}{14.5}=\frac{50}{100}$$
Or $$2I - 29 = 14.5$$
So, $$I = 21.75$$ lakhs

Hence, the total income from both the years is 37.95 lakhs