Zara Builders Inc. produces two products, A and B. The following information is presented for both products A B Selling price per unit $36 $24 Variable cost per unit 28 12 Total fixed costs are $234,000. Required: a. Calculate the contribution margin for each product marks) (2 b. Calculate break-even point in units of both A and B if the sales mix is 3 units of A for every unit of B (i.e., 75% of sales are from A and 25% of sales are from B). 14 marks) o e W