E20-6 Yard Tools manufactures lawnmowers, weed-trimmers, and chainsaws. Its sales mix and unit contribution margin are as follows. Lawnmowers Weed-trimmers Chainsaws Sales Mix 20% 50% 30% Unit Contribution Margin $30 $20 $40 Yard Tools has fixed costs of $4.200,000 Instructions Compute the number of units of each product that Yard Tools must sell in order to break even under this product mix E20-6 Yard Tools manufactures lawnmowers, weed-trimmers, and chainsaws. Its sales mix and unit contribution margin are as follows. Lawnmowers Weed-trimmers Chainsaws Sales Mix 20% 50% 30% Unit Contribution Margin $30 $20 $40 Yard Tools has fixed costs of $4.200,000 Instructions Compute the number of units of each product that Yard Tools must sell in order to break even under this product mix