Question: I need the answers, step by step, and using the formula. Returns and Standard Deviations Consider the following information: a. Your portfolio is invested 25

I need the answers, step by step, and using the formula.
Returns and Standard Deviations Consider the following information: a. Your portfolio is invested 25 percent each in A and C and 50 percent in B. What is the expected return of the portfolio? b. What is the variance of this portfolio? The standard deviation
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