Required information Problem 18-1A (Algo) Measuring costs using high-low method LO P1 [The following information applies to the questions displayed below] Alden Company's monthly data for the past year follow. Management wants to use these data to predict future variable: and fixed costs. Problem 18-1A (Algo) Part 1 - Estimate both the variable costs per unit and the total monthly fixed costs using the high-low method. (Do not round intermediate olculations.) (1) Required information Problem 18-1A (Algo) Part 2 2. Predict future total costs when sales volume is (a) 387,000 units and (b) 427,000 un