Please make sure to answer C clearly for up vote

Question 1 - The Learning Curve A manufacturing process on the critical path of a project is expected to get easier as you go along. You, the project manager, want to plan accurately for when you anticipate the execution of the task to hit a certain pace. a. On which cycle will the operator reach a standard production time of 65 minutes or less if the first unit required 85 minutes and the learning rate is 0.90? b. Considering all the cycles up to and including the one in which the operator reaches 65 minutes, what is the average length of time it takes to complete one cycle? c. What is the difference in time between the first cycle (what you would have estimated as the length of time for each cycle before you took a PM course) and the average cycle length up to and including the cycle in which the operator reaches 65 minutes per cycle (ie your answer for b)