01 December :Opening inventory of finished goods 400 units @ R86 per unit.

10 December : finished goods produced 1600 unit @R 90 per unit

12 December : theft of finished goods ( produced on 10 December) 500 units

20 December : finished goods produced 3500 units @ R 92 per unit

31 December : sales during December 4000 units @ 120 per unit

Required

calculate the value of closing inventory as at 31 December 2019 and the gross profit for December 2019 using the ff methods of inventory valuation:

1 . Weighted average cost

2. FIFO

3. LIFO

use the format of the statement of comprehensive income to present your answer