Steadigen company sells two generators long dash model a and model blong dashfor $ 432 per unit and $ 410 per unit, respectively. the variable cost of model a is $ 404 per unit and of model b is $ 304 per unit. if steadigen company's sales incentives reward sales of the goods with the highest contribution margin per unit, the sales force will be motivated to push sales of model a more aggressively than model b. what is the breakeven in units for model a and model b.