The given table shows the expenditure (in crore ₹) of three companies A, B and C and the percentage profit of these companies in different years.
Given that:
Income = Expenditure + Expenditure × (Profit % / 100) 

Years	Company A		Company B		Company C
	Expenditure	Profit	Expenditure	Profit	Expenditure	Profit
2002	24	50%	20	40%	40	45%
2003	30	45%	15	25%	50	55%
2004	36	40%	25	35%	60	65%
2005	40	60%	35	48%	80	75%

What is the difference (in crore ₹) between the profits of Company A and Company B in the year 2005?

Expenditure of Company A in 2005 = ₹40 crore

Profit percentage of Company A in 2005 = 60%

Expenditure of Company B in 2005 = ₹35 crore

Profit percentage of Company B in 2005 = 48%

​$$\text {Income} = \text{Expenditure} + \text{Expenditure} \times \frac{\text{Profit\%}}{100}$$​​

Profit = Income – Expenditure

So,

​$$\text {Income} -\text{Expenditure} = \text{Expenditure} \times \frac{\text{Profit\%}}{100} \\ \ \\\implies \text{Profit of a company} = \text{Expenditure} \times \frac{\text{Profit percentage}}{100}$$​​

The profit of Company A in 2005:

​$$\text{Profit of Company A} = 40 \times \frac{60}{100} = 40 \times 0.6 = ₹24$$​​

The profit of Company B in 2005:

​$$\text{Profit of Company B} = 35 \times \frac{48}{100} = 35 \times 0.48 = ₹16.8 \text{crore}$$ ​

Now,

Difference in profit = ₹24 − ₹16.8 = ₹7.2 crore