3. (10 min 10 pts) Rock Inc. has three divisions, Granite, Lime and Nina. All fixed costs are unavoidable Following is the income statement for the previous vear: Granite Lime Nina Total $500.000 $275,000 $225,000 $1,000,000 Variable Costs 175.000 125.000 100.000 400.000 Contribution Margin 325,000 150,000 125,000 600.000 Fixed Costs (allocated) 275.000 151.250 123.750 550.000 Profit Margin 50,000 (1.250) 1.250 50,000 Sales a. What would Rock's profit margin be if the Lime division was dropped