Highland mining and minerals co. is considering the purchase of two gold mines. only one investment will be made. the australian gold mine will cost $1,621,000 and will produce $307,000 per year in years 5 through 15 and $570,000 per year in years 16 through 25. the u. s. gold mine will cost $2,086,000 and will produce $281,000 per year for the next 25 years. the cost of capital is 12 percent. use appendix d for an approximate answer but calculate your final answers using the formula and financial calculator methods. (note: in looking up present value factors for this problem, you need to work with the concept of a deferred annuity for the australian mine. the returns in years 5 through 15 actually represent 11 years; the returns in years 16 through 25 represent 10 years.) a-1. calculate the net present value for each project. (do not round intermediate calculations and round your answers to 2 decimal places.)