SOLUTION
Inventory Turnover Ratio = Cost of Goods Sold / Average Inventory
5 = 18,90,000 / Average Inventory
Average Inventory = Rs. 3,78,000
Let Opening Inventory = x
Closing Inventory = 2.5x + x = 3.5 x
Average Inventory = (Opening + Closing Inventory) / 2
3,78,000 = (x + 3.5x) / 2
or, 4.5x = 7,56,000
or, X = 1,68,000
Opening Inventory = x = Rs 1,68,000
Closing Inventory = 3.5 x
= 3.5 × 1,68,000
= Rs 5,88,000