July August September October November December Total Average 350 450 460 390 390 360 4,960 413 3,020 3,500 4,020 3,290 3,170 3,070 $ 43,571 $ 3,631 PR 6-38 (Algo) Part 4 Compute the variable cost per hour and the fixed cost per hour 4-a. Compute the variable cost per hour and the fixed cost per hour at 620 hours of activity. 4-b. Why is the fixed cost per hour possibly misleading