9. You are going to spend 10,000 yuan to build a complete portfolio (complete portfolio). This complete portfolio contains a portfolio of risky assets and riskfree bonds. The portfolio consists of two stocks, X,Y, with weights of 60 per cent and 40 per cent. The expected yields on X and Y are 12 per cent and 8 per cent, respectively. The yield on risk-free bonds is 4%. How much money should you invest in risky assets to make the expected return on the full portfolio 8.8%