Any help would be appreciated!

Rock Inc. has three divisions, Granite Lime and Nina. All fixed costs are unavoidable Following is the income statement for the previous year Sales Variable costs Contribution Margin Fixed Costs (allocated) Profit Margin Granite $588, eee 187, ece 321,000 273,000 $ 48,000 Lime Nina Total $ 271,500 $226,000 $1,005,5ee 124,600 100, 300 411,9e9 146,909 125,700 593,6e8 168,250 113,750 555,000 $ 21,350) $ 11,950 $ 38,600 a. What would Rock's profit margin be if the Lime division were dropped? b. What would Rock's profit margin be if the Nina division were dropped