Step 1: Apply the EOQ Formula.
The Economic Order Quantity (EOQ) is calculated using the formula:
\[
EOQ = \sqrt{\frac{2DS}{H}}
\]
Where:
- \( D \) represents the annual demand (16,000 units),
- \( S \) represents the ordering cost per order (Rs 100),
- \( H \) represents the holding cost per unit per year (10\% of the unit cost, calculated as \( 0.1 \times 2 = 0.2 \)).
Step 2: Compute the EOQ.
Substitute the provided values into the EOQ formula:
\[
EOQ = \sqrt{\frac{2 \times 16000 \times 100}{0.2}} = \sqrt{\frac{3200000}{0.2}} = \sqrt{16000000} = 4004 \, \text{units}
\]
Final Answer:
\[
\boxed{4004 \, \text{units}}\
\]