50. A manufacturer of cedar shingles has supplied the following data: Bundles of cedar shakes produced and sold Sales revenus Variable manufacturing expense Fixed manufacturing expense Variable selling and administrative expense Fixed selling and administrative expense Net operating income 272.000 $ 2.203 200 9 995 200 $ 497.000 $ 262,500 $ 286,000 $ 172,500 The company's contribution margin ratio is closest to Do not round intermediate calculations. Round your answer to whole percentage Oo oo