What is the covariance between Stock Mango and Stock Apple? using covariance formula

Questions 14 - 16 are based on the following; You invest $20,000 in a portfolio comprising Stock Mango and Stock Apple, of which $15,000 is invested in Stock Mango. You are advised that the correlation between Stock Mange and Stock Apple is 0.95. The following portfolio details, including the expected return and standard deviation of each stock, are also provided: Rate of Return if State Occurs: Recession Normal Boom Expected Return Standard Deviation Probability of State of Economy 0.20 0.50 Stock Mango 5% 60% 29% 21% Stock Apple 30% 400/0 31% 7% What is the covariance between Stock Mango and Stock Apple? [For possible partial credit, be sure to show as much work as possible. Make sure your final answer is clearly labeled.]