Step 1: Calculate Current Assets:
\[
{Current Assets = Total Assets - Non-current Assets}
\]
\[
{Current Assets = Rs.3,00,000 - Rs.2,60,000 = Rs.40,000}.
\]
Step 2: Calculate Current Liabilities:
The firm’s total liabilities are derived as:
\[
{Total Liabilities = Total Assets - Shareholders' Funds}.
\]
\[
{Total Liabilities = Rs.3,00,000 - Rs.2,00,000 = Rs.1,00,000}.
\]
Out of this, the non-current liabilities are Rs.80,000. Hence:
\[
{Current Liabilities = Rs.1,00,000 - Rs.80,000 = Rs.20,000}.
\]
Step 3: Calculate Current Ratio:
The current ratio is calculated as:
\[
{Current Ratio = } \frac{ {Current Assets}}{ {Current Liabilities}}.
\]
Substitute the values:
\[
{Current Ratio = } \frac{Rs.40,000}{Rs.20,000} = 2 : 1.
\]
Conclusion:
The current ratio calculated based on the given information is \( \mathbf{2 : 1} \).