QS B-3 Number of periods of an investment LO P1 Megan Brink is offered the possibility of investing $7,231 today at 10% interest per year in a desire to accumulate $15,500. How many years must Brink wait to accumulate $15,500 ? (PV of $1,FV of $1, PVA of $1, and FVA of \$1) (Use appropriate factor(s) from the tables provided. Round your "PV of a single amount" to 4 decimal places and final answer to the nearest whole number.)