Assume that the Pure Expectation Theory determines interest rates in the markets. Today's market rates for different maturities are as follows: 1year=3.9%2years=4.5%3years=6%4years=6.1%5years=7.5% What is the implied 2 year interest rate for investing in 3 years? Enter your answer as a percentage, without the percentage sign ('\%'), and rounded to 1 decimal. For example. if your answer is 7.2134%, just enter 7.2