shut up incorporation switches to 3/10 net 30 from net 30. It is estimated that 72% of customers will take advantage of the discount, whether remaining 28% will pay on day 30. The price will increase from dollar 51 to dollar 52 per unit, unit sales will remain at 11,000 per year and redeliver costs will remain at 25 per unit but that losses will not be affected. Assume a 40% tax rate and a 4% discount rate calculate the npv