A certain product under development took 200 hours for the production of its 2nd unit and 180 hours for its 4th unit

a. What is the learning curve?
b. How much time did the first unit take?
c. How much time would the production of the 10th unit take? (Use both the formula and the Table E.3 approach. Do the two versions agree?)

(a) 90%; (b) 222.2 hours; (c) T10 = T1Nb = 222.210.-.152 = 156.6 hours; from Table E.3, 222.2 ? 0.705 = 156.7 hours. They generate the same result.