The Bitterns Company produces their product at a total cost of $89 per unit. Of this amount $14 per unit is selling and administrative costs. The total variable cost is $58 per unit. The desired profit is $25 per unit. Determine the mark up percentage on (a) total cost, (b) product cost and (c) variable cost concepts. Round your answer to one decimal place, if necessary. a. Total cost % b. Product cost % c. Variable cost concepts %