1. Total Capital of the Firm (based on Aadi’s capital contribution):
\[
\text{Total Capital} = ₹ 1,50,000 \div \frac{1}{5} = ₹ 7,50,000.
\]
2. Existing Partners’ Capital = ₹ 2,00,000 + ₹ 1,80,000 = ₹ 3,80,000.
3. Goodwill of the Firm:
\[
\text{Goodwill} = \text{Total Capital} - \text{Existing Partners’ Capital} - \text{Aadi's Capital} = ₹ 7,50,000 - ₹ 3,80,000 - ₹ 1,50,000 = ₹ 2,20,000.
\]