Answer:
a. $42.85
Explanation:
Given,
Product No. of Units Labor hours per unit Total labor hours
Ring 1,080 × 7 = 7,560
Ding 2,410 × 5 = 12,050
Total labor hours = 19,610 hours
Since all of the labor hours take place in the Assembly Department, overhead rate = $73,500/19,610 hours = $3.75
Product No. of Units Machine hours per unit Total machine hours
Ring 1,080 × 4 = 4,320
Ding 2,410 × 7 = 16,870
Total machine hours = 21,190 hours
As all of the machine hours take place in the Fabrication Department, overhead rate = $87,900/21,190 hours = $4.15
Total overhead cost per unit for rings
= (Assembly department overhead rate x Labor hours per unit for Rings) + (Fabrication department overhead rate x machine hours per unit for Rings)
= ($3.75 × 7) + ($4.15 × 4) = $42.85