Swagelok Enterprises is a manufacturer of miniature fittings and valves. Over a 5-year period, the costs associated with one product line were as follows: first cost of $20,000, and annual costs of $18,000. Annual revenue was $26,000 and the used equipment was salvaged for $4,000. What rate of return did the company make on this product? The rate of return that the company made on the product is %. Spectra Scientific of Santa Clara, CA, manufactures Q-switched solid state industrial lasers for LED substrate scribing and silicon wafer dicing. The company got a $68 million loan to be repaid over a 10 -year period at 10% per year interest. Determine the amount of the unrecovered balance of the principal immediately after the first payment. The amount of the unrecovered balance of the principal immediately after the first payment is $ For the net cash flow series, find the external rate of return (EROR) using the MIRR method with an investment rate of 19% per year and a borrowing rate of 8% per year. The external rate of return is %