3. The weekly output of a fabrication process is shown below, together with data for labor and material inputs. Standard selling price is $200 per unit. Overhead is charged weekly at the rate of [[$1,200 + 3/4 X direct labor cost]]. Assume a 40-hour week and an hourly wage of $20. Material cost is $7 per foot. What is the average multifactor productivity? WEEK OUTPUT #WORKERS MATERIAL (FT) 1 25,512 5 13500 2 25, 900 6 14200 3 25,950 6 14500 4 26,210 8 14700