If you deposit money today in an account that pays 14% annual interest, how long will it take to double your money? Round your answer to two decimal places. years Enter I/YR=4.5,PV=500000,PMT=0, and FV =1000000. Then when you press the N key, you get the answer, 15.7473 years. If you plug N=15.7473 into the FV formula, you can prove that this is indeed the correct number of years: FV=PV(1+l)N=$500,000(1.045)15 You can also use Excel's NPER function