​ Evaluate P(A∪B), if 2P(A) = P(B) = 5/13 and P(A|B) = 2/5​

Question

Evaluate P(A∪B), if 2P(A) = P(B) =  \(\frac{5}{13}\) and P(A|B) = \(\frac{2}{5}\)  

Answer 1

= \(\frac{5}{26} + \frac{5}{13} - \frac{2}{13} = \frac{11}{26}\)