Answer:
$680
Step-by-step explanation:
Using the FIFO method
Closing Stock = [ 360 × $11 ] + [ ( 400 - 360 ) × $10 ]
= $3,960 + $400
= $4,360
Using the LIFO method
Closing Stock = [ 320 × $9 ] + [ ( 400 - 320 ) × $10 ]
= $2,880 + $800
= $3,680
Therefore,
The amount of Phantom Profit
= Closing Stock using the FIFO method - Closing Stock using the LIFO method
= $4,360 - $3,680
= $680