A manufacturer of tiling grout has supplied the following data: Kilograms produced and sold 460,000 $1,850,000 $ 944,000 $ 234,000 352,000 $ 200,000 $ 120,000 Sales revenue Variable manufacturing expense Fixed manufacturing expense Variable selling and administrative expense Fixed selling and administrative expense Net operating income The company's contribution margin ratio is closest to: Multiple Choice 81.0% 29.9% 49.0% 76.5%