show work on paper please

Zain received a $20.000 signing bonus in the form of his company's stock, KEG. He's considering whether he should keep the stock or sell it. so he wants to see how it will alter the profile of his current portfolio, which consists of $40,000 invested in a well-diversified mutual fund. He determines the following estimates for the two investments: The correlation coefficient of KEG with the original portfolio returns is 0.5. What is the expected return and standard deviation of Zain's new portfolio, assuming he keeps the company stock? Expected Retien - 10x: 5tandard Deviation - 21s Lnifected fleturn + 1225 Standard Deviation =24A