Answer
2
Explanation:
Cost index in dollar - value LIFO method is used to determine the change in prices since the beginning of he base year by comparing the year end inventory to the base layer cost.
The extended cost of the ending inventory at the most recent price is divided by the cost of the ending inventory at the base year price.
Workings
Cost in term of base layer = $50,000
Cost in term of the layer layer $100,000
Cost index = 100000/50000 = 2