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Tom holds shares of two companies in equal proportions which have the following characteristics: Share1: Expected return 25\% and standard deviation 30\% Share2: Expected return 17% and standard deviation 22% Returns of these shares have a correlation of 0.5 Required: (a) Calculate the portfolio return and risk (b) If the investgr wishies to reduce the portfolio risk to 15%, what will be the correlation coefficient? Tom holds shares of two companies in equal proportions which have the following characteristics: Share1: Expected return 25\% and standard deviation 30\% Share2: Expected return 17% and standard deviation 22% Returns of these shares have a correlation of 0.5 Required: (a) Calculate the portfolio return and risk (b) If the investgr wishies to reduce the portfolio risk to 15%, what will be the correlation coefficient