Answer:
$30,000
Step-by-step explanation:
The computation of the difference in cost
Particulars Make Buy (Increase) Decrease in income
Direct material $65,000 $(65,000)
Direct labor $55,000 $(55,000)
Variable Overheads $30,000 $(30,000)
Outside purchase price $180,000 $180,000
Total relevant Cost $150,000 $180,000 $30,000
The $180,000 is come from
= 10,000 × $18
= $180,000