Determine the missing amounts. (Round answers to decimal places, e.g. 1,225.) Unit Selling Price Unit Variable Costs Unit Contribution Margin 1. $520 $310 $ (a) 2. $300 $ (c) $120 3 . $ (e) $ (f) $440 me missing amounts. (Round answers to decimal places, e.g. 1,225.) Unit Variable Costs Unit Contribution Margin Contribution Margin Ratio 520 $310 $ (a) % (b) 300 $ (c) $120 % (d) (e) $ $ (0) $440 40 %