Type the answer A new ball pen with unique characteristics has been developed by a ball pen maker. His design development executive proposed three retail prices: Rs.30 for the mega star, Rs.20 or the superior, and Rs.15 for the average model. According to his marketing manager, wholesalers and retailers should be granted at least a 30% discount. The fixed cost is expected to be roughly Rs.140000, with a variable cost per unit of Rs.7. Calculate the break-even point for each ball pen model.