Answer:
8.13%
Step-by-step explanation:
Annual return = [ (Total FV/Initial investment)^(1/n) ] -1
n = useful life of the project
Total Future Value = (22650*5) +5000
Total FV = $118,250
Initial investment = $80,000
Annual return = [ (118,250/80,000)^(1/5) ] -1
r = [ (1.478125^(1/5)] -1
r = 1.0813 - 1
r = 0.0813 or 8.13%