You have been assigned to a ship building company that has an 85 percent learning curve. You need to estimate the time that will be needed to complete the fifth unit of the model of ship they are currently building. The time for the first unit is unknown as you were not present when that model was built. However, you have observed the building process of the second, third and the fourth units. You have found that the units 2 through 4 (i.e., for second, third and the fourth units) took a total of 68140 hours to complete. (5 points)