2) It is estimated that a work activity for a project will take 50 labor-hours the first time it is done, with an 80% learning curve. The project requires 8 repetitions of this activity. a. How many total labor-hours do you estimate it will take to complete all 8 repetitions? b. If you can have several workers working simultaneously on this activity, each with the same learning curve, what is the minimum number of workers you need to complete this task within 12 work days?