Answer:
The dollar amount for ending inventory using the last-in-first-out method of inventory valuation is $50
Explanation:
Using LIFO,last-in-first-out method of inventory valuation,items received last into the store are deemed to be sold first, hence the sales of 10 units on March 1 was the inventory purchased on February 28, leaving the items of inventory purchased on January 3 as closing inventory
value of closing inventory using LIFO=10*$5=$50