I know how to do this I just want to know how to get the sales mix. Would you be able to explain how we get the sales mix.

Section B - Management Accounting Question 6. Cost-volume-profit analysis Lily Fan Company has three products: Economy, Standard and Deluxe. The following information is available for the three products: Standard Deluxe Economy $10 $ 8 Selling price Variable costs Expected sales $35 $20 $13 $24 18 000 12 600 5 400 Fixed costs are $137 700. The tax rate is 28%. Formulas are provided on the last pages of this question booklet. Required: a. Calculate the weighted average contribution margin, assuming the sales mix does not change. (6 marks)