Suppose Wonderful State Bank wants to add a new branch office. They have determined that the cost of construction on the new facility will be $1.5 million with another $500,000 in organizational costs. Wonderful State Bank has estimated that they will generate $319,522 in net revenues. If the new branch is expected to last 20 years, what is the expected rate of return on this investment? (Round to the nearest whole percent) 21 percent 32 percent 15 percent 6 percent