Problem 13-5 R-Squared (LO1, CFA7) You are given the following information concerning three portfolios, the market portfolio, and the risk-free asset: Portfolio x Y Rp 12.5% 11.5 7.1 10.5 6.2 OP 34% 29 19 24 0 Bp. 1.50 1.20 0.80 1.00 0 Market Risk-free Assume that the correlation of returns on Portfolio Y to returns on the market is 0.68. What is the percentage of Portfolio Y's return that is driven by the market? (Round your answer to 4 decimal places.) R-squared