Mountain Monster Desert Dragon $5,400 55,250 3,285 3,400 Sales price Variable cost of goods sold Manufacturing margin Variable selling expenses $2,115 1,035 $1,850 905 Contribution margin $1,080 $945 Fixed expenses 485 310 Income from operations $595 $635 In addition, the following sales unit volume information for the period is as follows: Mountain Monster Desert Dragon Sales unit volume 5,000 4,850 a. Prepare a contribution margin by product report. Calculate the contribution margin ratio for each product as a whole percent. PowerTrain Sports Inc. Contribution Margin by Product Mountain Monster Desert Dragon Cost of goods sold x Contribution margin ratio 19.0 % X