Unknown Investment Periods Determine the number of periods for which the following amounts would have to be invested, under the terms specified, to accumulate to $10,000. Convert the number of periods to years. 1. $5,051 at 10% per annum, compounded semiannually 2. $5,002 at 8% per annum, compounded annually 3. $5,134 at 16% per annum, compounded quarterly