Problem $4-20$ Calculating the Number of Periods $[$LO $4]$

You expect to receive $$27,000$ at graduation in two years. You plan on investing it at $9\mathrm{.}5$ percent until you have $$162,000.$

How long will you wait from now? $($Do not round intermediate calculations and round your answer to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

Years to wait