Mettel products sells 100,000 flash drives annually to industrial distributors who resell the drives to business customers for $40 each. the distributors’ margins are 25%. mettel products’ cost of goods sold is $10.00 each. mettel’s total variable costs (including selling costs) are $15.00 per drive. what is the gross margin (in percentage) enjoyed by mettel products on its drives? [note: a firm’s margin on a product is typically calculated as a percentage of the firm’s selling price.] mettel is considering increasing its annual advertising spending from $75,000 to $150,000. how many additional flash drives would it need to sell in a year in order to break-even? now if instead of increasing its advertising spending, mettel decides to reduce its price by $3 per drive, how many additional units would it need to sell in order to break even?