Answer:
The Draper Corporation would be indifferent between continuing and discontinuing of Doombugs at 20,000 units.
Explanation:
The draper should be indifferent at the level at which they covered all of their Fixed Cost.
The sales price per unit is ⇒ 150,000/15,000 = 10 per unit
The Variable cost per unit is ⇒ 120,000/15,000 = 8 per unit
The Break-even units for Draper should be:
Break-even units =       Fixed Cost       Â
                Sale price - Variable Cost
Break-even units = 40,000
                 10-8
Break-even units = 40,000
                  2
Break-even units = 20,000 units
                 Â