1. Total Drawings = ₹ 30,000 \(\times\) 2 = ₹ 60,000.
2. Average Period = \(\frac{6 + 3}{2 \times 12} = \frac{9}{12}\) years (as withdrawals are made at the beginning of each half-year).
3. Interest on Drawings:
\[
\text{Interest} = ₹ 60,000 \times \frac{10}{100} \times \frac{9}{12} = ₹ 4,500.
\]