Can you please do part a , b, and c, im stuck on all of them !!

(*) P11-11 (similar to) :EQuestion Help Suppose Wesley Publishing's stock has a volatility of 50%, while Addison Printing's stock has a volatility of 30%. If the correlation between these stocks is 50%, what is the volatility of the following portfolios of Addison and Wesley: a. 100% Addison b. 75% Addison and 25% Wesley c. 50% Addison and 50% Wesley a. The volatility of a portfolio of 100% Addison stock is %. (Round to two decimal places.) Enter your answer in the answer box and then click Check