Question 4 Westerville Corp. has collected the following data concerning its maintenance costs for the past six months: Units Produced Total Cost July August September 17,200 32,800 36,100 22,000 40,900 38,300 $32,109 48,700 55,400 38,000 66,000 62,500 October November December (a1) Calculate the variable cost per unit using the high-low method. (Round variable cost per unit 2 decimal places, e.g. 12.25.) Variable cost $ per unit Attempts: 0 of 3 used SAVE FOR LATER SUBMIT ANSWER (a2) The parts of this question must be completed in order. This part will be available when you complete the part above. (a2) Calculate the fixed cost element using the high-low method. Fixed cost Attempts: 0 of 3 used