5 Joseph has surveyed a group of companies on their needs for computer keyboards and the prices the companies are willing to pay. Based on this survey, he has developed an idea for a fatigue reducing keyboard that can be reasonably priced at $480. Joseph believes that this particular product should allow a profit of 20 percent of the product's cost. What is Joseph's target cost for his keyboard? Select ones O 5300 Db: 5400 5480 d. 5500