#### Answer

$\frac{3}{5}$

#### Work Step by Step

You have the probabilities:$\frac{4}{10}$ and $\frac{5}{10}$.Add the probabilities to find the probability of either of the events occurring. Then, subtract $\frac{x}{y}$ because that is the probability that both events will occur
$\frac{4}{10}$ +$\frac{5}{10}$ - $\frac{3}{10}$
$\frac{6}{10}$ -simplify-
=$\frac{3}{5}$