Given data:
Annual demand, \(D = 40,000\) chart papers
Purchase cost per unit, \(C = ₹10\) (not directly used in EOQ calculation)
Holding cost rate = 20% of purchase cost
\(\Rightarrow\) Holding cost per unit per year, \(H = 20% \times 10 = ₹2\)
Ordering cost, \(S = ₹100\) per order
The formula for Economic Order Quantity (EOQ) is:
\[
EOQ = \sqrt{\frac{2DS}{H}}
\]
Substitute the values:
\[
EOQ = \sqrt{\frac{2 \times 40,000 \times 100}{2}} = \sqrt{\frac{8,000,000}{2}} = \sqrt{4,000,000} = 2000
\]
Economic Order Quantity (EOQ) = 2000 chart papers