Farecan is making a complex product for the first time. If it takes 4,000 hours to make the first one and their customer wants 8 units In total, how long does it take to make the last 4 if an 80% cumulative average time learning curve is appropriate? 9,416 hours B 9,216 hours 10,800 hours 9,316 hours Farecan is making a complex product for the first time. If it takes 4,000 hours to make the first one and their customer wants 8 units In total, how long does it take to make the last 4 if an 80% cumulative average time learning curve is appropriate? 9,416 hours B 9,216 hours 10,800 hours 9,316 hours