Answer and Explanation:
The computation of the activity based overhead rate is shown below:
= Estimated overhead ÷ cost driver per activity
a. For designing
= $448,260 ÷ 12,400
= $36.15 per design hour
b. For sizing and cutting
= $4,009,050 ÷ 151,000
= $26.55 per machine hour
c. For stiching and trimming
= $1,419,075 ÷ 79,500
= $17.85 per labor hour
d. For wrapping and packing
= $299,250 ÷ 31,500
= $9.5 per finished units