Taku-Tau company has provided you with the following information: Selling price per unit = N$90 Variable cost per unit= N$30 Activity driver Cost driver rate Level of activity driver N$ 800 90 N$ 65 500 Set-ups Inspection Other data: Total fixed costs (traditional) Total fixed costs (ABC) N$900 000 N$450 000 If the company reduces the set-up costs by N$100 per set-up and reduces the number of inspections needed to 400, how many units must be sold to break-even