Answer:
Break Even Point
In Units = 2,000 units
In value = $80,000
Explanation:
Break even Point = 
When we use contribution per unit, we get the break even point in units sales.
When we use the contribution margin as a percentage of sales we get break even sales in value.
Contribution per unit = $20
Contribution margin in percentage = $20/$40 = 50%
Therefore, Break even Point in units = 
Break even units = 2,000
Break Even Point in value = 
Sales to be made in value at break even = $80,000