Answer:
A) initial outlay = $150 million
Cash flow year 1 = [($30 - $25) x 0.6] + $25 = $28
Cash flow year 2 = [($30 - $25) x 0.6] + $25 = $28
Cash flow year 3 = [($30 - $25) x 0.6] + $25 = $28
Cash flow year 4 = [($30 - $25) x 0.6] + $25 + ($25 x 60%) + $50 = $93
B) Using a financial calculator, NPV = -$16.85 million
C) cash flow year 4 should increase by $24.667 million, meaning that the selling price must increase by $$24.667/0.6 = $41.11 million
minimum selling price $25 + $41.11 = $66.11 million