P8-2 Return calculations For each of the investments shown in the following table, calcu- late the rate of return earned over the unspecified time period. Cash flow Beginning-of- End-of Investment during period period value period value 100 1,100 800 118,000 120,000 15,000 48,000 45,000 7,000 600 500 12,400 12,500 1,500