Harry's Picture manufactures various picture frames. Each new employee takes 4 hours to make the first picture frame and 3 hours to make the second. Required: What is the learning-curve percentage, assuming the cumulative average-time learning model? b. What is the learning curve percentage, assuming the incremental-unit time learning model? What is the time needed to build 32 picture frames by a new employee using the cumulative average-time learning model? a. C