A cement manufacturer has supplied the following data: Tons of cement produced and sold Sales revenue Variable manufacturing expense Fixed manufacturing expense Variable selling and administrative expense Fixed selling and administrative expense Net operating income 225,000 $1,035,000 s 421,000 S 280,000 $ 29,000 S 220,000 S 85,000 What is the company's unit contribution margin? (Round your intermediate calculations to 2 decimal places.) Multiple Choice 52.00 per un 5460 per un 50 62 per un 5260 per un