Step 1: Determine total revenue.
Let Total Revenue = Rs. X.
Cash Revenue = 20% of X.
Credit Revenue = Rs. 20,00,000.
\[\text{Therefore, } 20\% \times X + 20,00,000 = X\] \[0.20X + 20,00,000 = X $\Rightarrow$ 0.80X = 20,00,000\] \[X = 25,00,000\]
Step 2: Calculate Gross Profit.
Gross Profit Ratio = 25% of Revenue.
\[Gross Profit = 25\% \times 25,00,000 = 6,25,000\]
Step 3: Subtract indirect expenses.
\[Net Profit = Gross Profit - Indirect Expenses = 6,25,000 - 50,000 = \text{Rs. } 5,75,000\]
Final Answer: \[\boxed{\text{Rs. } 5,75,000}\]