The table below contains data on customers’ purchases at an electronics store that only sells tablets and smartphones:
[tex] \[ \begin{array}{|c|c|c|c|} \hline \text{Device\textbackslash Storage in GB} & \text{32} & \text{64} & \text{128} \\ \hline \text{Tablet} & \text{15} & \text{30} & \text{30} \\ \hline \text{Smartphone} & \text{60} & \text{70} & \text{45} \\ \hline \end{array} \] [/tex] . What is the probability that a randomly selected purchase has 128 GB of storage?