Answer:
Decrease in net income by $1,360
Step-by-step explanation:
First, we need to prepare analysis of costs and savings if the company buys outside.
Please note that the fixed costs per unit are unavoidable and are irrelevant hence ignored in making this decision.
Analysis of costs and savings
Purchase price (400 widgets × $50 per unit) = ($20,000)
Savings:
Variable costs (400 widgets × $38 per unit) = $15,200
Fixed costs (400 widgets × $8.60 per unit) = $3,440
Net income effect
($1,360)
The effect of on net income if the company buys widget from outside is a decrease in net income by $1,360