Solve for the unknown number of years in each of the following: (Do not round intermediate calculations and round your answers to 2 decimal places, e.g., 32.16.)

Present Value Years Interest Rate Future Value

$ 1,050 ? 10 % $ 1,905

2,741 ? 8 4,500

34,405 ? 13 395,120

34,100 ? 20 222,404