Answer:
a. Total revenue from the 3 products:
= $75,000 + $80,000 + $30,000
= $185,000
Total costs at the split-off point:
= $45,000 + $55,000 + $60,000
= $160,000
Gross profit currently being earned
= Total revenue - Total costs
= $185,000 - $160,000
= $25,000
b. Incremental revenue from product A:
= $116,000 - $75,000
= $41,000
Incremental costs = Rent for special equipment + Materials and labor cost
= $17,500 + $12,650
= $30,150
Incremental gross margin = Incremental revenue - Incremental costs
= $41,000 - $30,150
= $10,850
So, if product A is further processed, quarterly profits will increase by $10,850.