Required information [The following information applies to the questions displayed below) Phillips Company manufactures air-conditioning units for commercial buildings and has noticed considerable variation in shipping expenses from month to month as per the data below Units Shipped Month January February March April May June Joly Total Shipping Expense $ 2,200 $ 3,180 $ 2,600 $ 1,500 $ 2,200 53,000 $ 3,600 ON 8. If the air conditioners have an average sales price of $5.000. variable direct manufacturing costs are $2.500 per unit, vadable manufacturing overhead costs are $500 per unit and variable selling and administration costs (excluding shipping) are 5200 per unit what is the contribution margin per unit? Contribution margin per unit