Could you calculate without using excel, thank you

Q1.b) Two investments, Good and Better, have the following probability distributions and associated rates of return: Assuming you invest RM50,000 in Good and RM75,000 in Better, and the correlation between the 2 assets is 0.8 [17 Marks] i) Calculate the expected returns on Good and Better, respectively. [6 marks] ii) Calculate the standard deviation of Good and Better, respectively. [8 marks] iii) Calculate the standard deviation of the portfolio above. [3 marks]