can anyone help me with these two problems please! found the ans on chegg but they were wrong! will upvote!

QP 8: Returns and Standard Deviations Consider the following information: Rate of Return if State Occurs State of Economy Probability of State of Economy Stock A Stock B Stock C Boom .75 .16 .33 Bust .25 .02 -.06 .06 a. What is the expected return on an equally weighted portfolio of these three stocks? b. What is the variance of a portfolio invested 20 percent each in A and B and 60 percent in C? QP 24: 24. Analyzing a Portfolio You have $100,000 to invest in a portfolio containing Stock X and Stock Y. Your goal is to create a portfolio that has an expected return of 12.7 percent. If Stock X has an expected return of 11.4 percent and a beta of 1.25 and Stock Y has an expected return of 8.68 percent and a beta of 85, how much money will you invest in Stock Y? How do you interpret your answer? What is the beta of your portfolio