Answer:
$142.10
Explanation:
The computation of average cost of product Q79Y is shown below:-
Activity cost  Total cost  Total activity   Activity Rate
pool
Assembly   $775,100      46,000      $16.85
Processing
orders     $57,375        1,500        $38.25
Inspection  $108,772       1,420        $76.6
Average cost
Direct Material Cost               $41.00
Direct labor Cost                  $41.29
Total Direct Cost                 $37,031
( Material Cost + Labor Cost ) × Number of Units
Add :Assembly Cost              $18,872
(1,120 Hours × $16.85)
Add :Processing Order Cost        $4,208
(110 Orders × $ 38.25)
Add :Inspection Cost              $3,830
(50 Hours × $ 76.6)
Total Cost                       $63,941
Average Cost = Total Cost ÷ Annual Units
= $63,941 ÷ 450
= $142.10