Based on the new cost of sales and the number of sales for the Goldin Corporation, the net operating income would b. increase by $4,000.
= (Contribution margin x sales) - Flat salary
= (80 x 200) - 5,000
= $11,000
= (80 Contribution margin - 20 per unit) x 200 units x 1.25 increase
= 60 x 200 x 1.25
= $15,000
The difference would be:
= 15,000 - 100,000
= $4,000 increase
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