$P(A) = 0.6$, $P(B) = 0.4$ and $P(A \cup B) = 0.7$. What is $P(A \mid B)$?

Explanation

1. 01

   $P(A \cap B) = 0.6 + 0.4 - 0.7 = 0.3$.

2. 02

   $P(A \mid B) = \frac{0.3}{0.4} = 0.75$.