The Wall Street Journal reports that the current rate on 10 -year Treasury bonds is 2.80 percent and the rate on 20 -year Treasury bonds is 5.05 percent. Assume that the maturity risk premium is zero. Calculate the expected rate on a 10 -year Treasury bond purchased ten years from today, E(10r10). Note: Do not round intermediate calculations. Round your percentage answer to 2 decimal places (i.e., 0.1234 should be entered as 12.34)