The restaurant also has the following indirect, undistributed costs: With a piece of scrap paper, prepare a consolidated contributory income statement showing each of the three divisions side by side for compari a) Gross margin as a percentage of sales b) Contributory income as a percentage of sales gross margin as a percentage of sales =62.4% contributory income as a percentage of sales =199% gross margin as a percentage of sales =57.4% contributory income as a percentage of sales =22.4 gross margin as a percentage of sales =69.8% contributory income as a percentage of sales =417% gross margin as a percentage of sales =62.4% The restaurant also has the following indirect, undistributed costs: With a piece of scrap paper, prepare a consolidated contributory income statement showing each of the three divisions side by side for compari a) Gross margin as a percentage of sales b) Contributory income as a percentage of sales gross margin as a percentage of sales =62.4% contributory income as a percentage of sales =199% gross margin as a percentage of sales =57.4% contributory income as a percentage of sales =22.4 gross margin as a percentage of sales =69.8% contributory income as a percentage of sales =417% gross margin as a percentage of sales =62.4%