in year 1, manufacturing costs as a percentage of sales are assumed to have a pert distribution with a minimum value of 65 percent, a maximum value of 90 percent, and a most likely value of 80 percent. thereafter it is assumed that manufacturing cost will be the same percentage of sales as year 1. fixed cash cost (rent) is expected to be $100,000 in the first year. however, the fixed cash cost is expected to grow at the expected inflation rate at 4 percent a year