Answer:
the per unit value is $18.20
Explanation:
The computation of the per unit value of ending inventory is shown below:
On Aug 2 Â 18 units at $15.50 Â Â Â Â $279
On Aug 18 Â 20 units at $14 Â Â Â Â Â Â $280
Total       38 units   $14.71     $559
On Aug 29
Sales units   -36 units   $14.71     -$529.58
Balance      2 units    $14.71     $29.42
On Aug 23   23 units   $18.50    $425.50
Oustanding   25 units   $18.20    $454.92
hence, the per unit value is $18.20