The required return on a portfolio is 18 percent, risk-free rate is 6 percent and the market return is 14 percent. Calculate the beta of the portfolio.
In a school 50% of the students are younger than 10, 1/20 are 10 years old and 1/10 are older than 10 but younger than 12, the remaining 70 students are 12 years or older. How many students are 10 years old?