SELF-CHECK
Price is 25, variable cost 10 and fixed costs 3000. What is break-even volume?

REFERENCE REASONING
Contribution is 15 per unit, so break-even is 200 units under the linear model. If price falls to 22, contribution is 12 and break-even becomes 250 units.

This is a reasoning reference for the supplied fictional case, not an executed app or tested cloud deployment. Alternative approaches are valid when supported by stated assumptions and evidence.
