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1. Suppose that tangency portfolio has expected return of 15% and standard deviation of 12%. Riskfree lending rate is 3% and
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Sharpe ratio = (return of portfolio - risk free rate)/ standard deviation

Return of portfolio = 15%

Risk free rate = 3%

we take risk free rate @3% because it is the rate at which we park our money in government securities which is risk free

Standard deviation = 12%

By formula

= (15%-3%)/12%

= 1%

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