Answer:
800 units of product A must be sold for break-even
Step-by-step explanation:
Given, weighted-average contribution is $100.
Total break-even units = Total fixed cost / Weighted-average contribution
Total break-even units = $400,000 / $100
Total break-even units = 4,000 units
Product A break-even = 4,000 x 20%
Product A break-even = (800 units)
Hence, the correct answer is 800 units.