Answer:
-$79000
Explanation:
The computation of the annual financial advantage (disadvantage) is shown below;
Particulars Per unit Total 13000 units
Make Buy Make Buy
Direct materials 2.90 37700
Direct labor 7.50 97500
Variable manufacturing
overhead 8.00 104000
Supervisor's salary 3.40 44200
Contribution margin 25000
Purchase cost 29.80 387400
Total 308400 387400
Now the finacial disadvantage is
= 308400 - 387400
= -$79000