Assuming the Fixed costs are 10,000 30,000. The incremental profit is $80,000.
First step
Alternative A
Revenues $100,000
Less Variable costs $50,000
Less Fixed costs $10,000
Profit $40,000
Alternative B
Revenues $200,000
Less Variable costs $50,000
Profit $120,000
Second step
Incremental profit=$120,000 –$ 40,000
Incremental profit= $80,000
Therefore the incremental profit is $80,000.
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