Answer:
Gain from selling at the split-off point = $12 * 2,300
Gain from selling at the split-off point = $27,600
Gain from Processing further = $14 * 2,300 - Processing cost ($10,300)
Gain from Processing further = $ 32,200 - $10,300
Gain from Processing further = $21,900
Overall profit
= $27,600 - $21,900
= $5,700 (Decrease in overall profit )
Hence, if product QI is processed further and sold, then overall profit will be decreased by $5,700