12-8 Projects G and H have the same cost of $4,300 a year for the next five years. Proje $3,000, and $1,000 for the next three years. for Projects G and H. the same cost of $10,000. Project G has a has a net cash flow cash flows of $9,000, ears. Project H has net cash 10 three years. Calculate the internal ray nal rate of refur