AAPL has two annual coupon bonds outstanding that are selling at par. One bond is a 4% coupon rate bond with a year left to maturity (the only coupon payment left is the one at maturity), and another bond is a two year 6% coupon rate bond. What is the forward rate for AAPL after the present year? We have y1 = 4% and y2 = 6.06%. So the right answer is 8.16%. The WRONG answer would be 8.04%.

Can someone explain why the yield for the 2Y bond would be 6.06% as opposed to the given 6%? Using the forward rate formula, I can achieve the right answer using y2 = 6.06% however I am unsure of how to actually get that value.