Calculate Variance Portfolio (Please show the steps of the problem preferably hand-written)

For an investment, you are projecting the following % return scenarios along with their associated probabilities (probabilities must sum to 100%): Scenario Probability of Occurrence Return Optimistic 10% 40% Base Case 10% 10% Pessimistic Remaining Probability -30% Calculate the variance of the portfolio (Answer to the nearest 0.0001 - Use the decimal form - do not use the % form)