The Tolat Corporation has 400 obsolete desk calculators that are carried in inventory at a total cost of $576,000 If these calculators are upgraded at a total cost of S130,000, they can be sold for a total of S190,000. As an alternative, the calculators can be sold in their present condition for $40,000 Assume that Tolar decides to upgrnde the calculators. At what selling price per unit would the company be as well off as if it just sold the calculators in their present condition S65 per calculator $308 per calculator S425 per calculator $140 per calculator