Answer:
d) None of these
Explanation:
Weighted average rate is the inventory value at the average cost, whatever the price is paid. The total value of the inventory is divided by the total units to calculate weighted average rate. Formula to calculate the weighted average rate is
Weighted average rate = Total Cost of units available for sale / Numbers of unit available for sale
Weighted average rate = $3,000 / ( 10 units + 20 units ) = $3,000 / 30 units = $100 per units
Closing Inventory value = $100 x 12 units = $1,200