Answer:
Results are below.
Explanation:
First, we need to allocate overhead to Job N-60:
Allocated MOH= Estimated manufacturing overhead rate* Actual amount of allocation base
Direct labor hours:
Assembly= 375/30= 12.5
Testing & Packaging= 105/30= 3.5
Overhead:
Assembly= 12.5*28= $350
Testing & Packaging= 3.5*24= $84
Total= $434
Now, the total manufacturing cost:
Total cost= (420 + 57) + (375 + 105) + 434
Total cost= $1,391
Finally, the unitary cost:
Unitary cost= 1,391/10
Unitary cost= $139.1