Answer:
Buying option
Step-by-step explanation:
In this question we compare the buying cost and the making cost
The buying cost comprise of
= Direct material per unit + Direct labor per unit + overhead per unit × remaining percentage
= $7.80 + $23.80 + $39 × 40%
= $7.80 + $23.80 + $15.60
= $47.20
And, the buying cost is $45.20
Based on these two cost, the Factor should use the buying cost as it is less than the making cost