A certain computer has two identical processors that are able to run in parallel. Each processor can run only one process at a time, and each process must be executed on a single processor. The following table indicates the amount of time it takes to execute each of three processes on a single processor. Assume that none of the processes are dependent on any of the other processes. $$ \begin{array}{|c|l|} \hline & \textbf{Execution Time on} \\ \textbf{Process} & \textbf{Either Processor} \\ \hline \text{X} & \hskip{3px}\text{60 seconds} \\ \hline \text{Y} &\hskip{3px} \text{30 seconds} \\ \hline \text{Z} & \hskip{3px}\text{50 seconds} \\ \hline \end{array} $$

Which of the following best approximates the minimum possible time to execute all three processes when the two processors are run in parallel?

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Given two processors, one should process task Y and Z and the other should process just task X. This parallel processing will take 80 seconds (Y and Z).