When General Electric Company first introduced the Lucalox ceramic, screw-in light bulb, the bulb cost three and one-half times as much as an ordinary bulb but lasted fi\e times as long. An ordinary bulb cost SI. 00 and lasted about eight months. If a firm has a discount rate of 12 percent compounded three times a year, how much would it save in present-v alue dollars by using one Lucalox bulb0 .