Variable Cost Ratio, Contribution Margin Ratio Chillmax Company plans to sell 3,500 pairs of shoes at $60 each in the coming year, Unit variable cost is $21 (includes direct materials, direct labor, variable factory overhead, and variable selling expense). Fixed factory overhead is $30,000 and fixed selling and administrative expense is $48,000. Required: 1. Calculate the variable cost ratio. 2. Calculate the contribution margin ratio