E 5-5 Solving for unknowns; single amounts L05-5 For each of the following situations involving single amounts, solve for the unknown (?). Assume that interest is compounded annually. (i = interest rate, and n = number of years) Present Value Future Value i n 10% 5 1. 2. 3. 4. 5. ? $36,289 15,884 46,651 15,376 $ 40,000 65,000 40,000 100,000 ? ? 8 ? 7 10 ? 8 20 Page 267