The local supermarket is considering investing in self-checkout kiosks for its customers. the self-checkout kiosks will cost $ 46 comma 000 and have no residual value. management expects the equipment to result in net cash savings over three years as customers grow accustomed to using the new technology: $ 15 comma 000 the first year; $ 22 comma 000 the second year; $ 24 comma 000 the third year. the company has already determined that the net present value of the investment at a 14% discount rate is $ 273. what is the approximate internal rate of return (irr) of the kiosk investment?