Cullumber Company makes 2 products, sleep masks and sleep socks. Additional information follows: Sleep Masks Sleep Socks Units 5,400 3,900 Sales $102,000 $67,000- Variable costs 49,998 21,019 Fixed costs 22,842 23,010 Net income $29,160 $22,971 Profit per unit $5.40 $5.89 Compute the Contribution margin per unit. (Round answers to 2 decimal places, e.g. 15.25.) Contribution margin per unit Sleep Masks $ Sleep Socks