An inventory record card shows the following details: - Feb 1: 50 units in stock at cost of $40 per unit - Feb 7: 100 units purchased at a cost of $45 per unit - Feb 14: 80 units sold - Feb 21: 50 units purchased at a cost of $50 per unit - Feb 28: 60 units sold What is the value of inventory at 28 Feb using FIFO method