Answer:
Time needed to complete the 4th unit = 57.80 hours
Explanation:
The learning curve theory states that as the cumulative output doubles the cumulative average time taken till date is reduced to a certain percentage of the previous time. This percentage is called learning rate
Total time = Average time × cumulative number of units
The cumulative average time is determined using the formula below:
Y= aX^b
a - time taken for the first unit produced
b = log LR/Log 2
X- cumulative units till date
Y - cumulative average time taken for X units
LR- Learning rate
LR = 68/80 = 0.85 = 85%
Time needed to complete the 4th unit
= Learning rate × time take for the 2 unit
= 85% × 68
= 57.80 hours
Time needed to complete the 4th unit = 57.80 hours