Problem
Refer to the table summarizing service times (seconds) of dinners at a fast food restaurant. How many individuals are included in the summary? Is it possible to identify the exact values of all of the original service times? \begin{tabular}{c|c} \hline Time (sec) & Frequency \\ \hline $60-119$ & 7 \\ \hline $120-179$ & 21 \\ \hline $180-239$ & 16 \\ \hline $240-299$ & 2 \\ \hline $300-359$ & 5 \end{tabular} individuals are included in the summary. (Type a whole number.)
Solution
Step 1 ：The question is asking for the total number of individuals included in the summary. This can be found by summing up the frequencies of each time interval.
Step 2 ：frequencies = [7, 21, 16, 2, 5]
Step 3 ：total_individuals = 51
Step 4 ：The total number of individuals included in the summary is \(\boxed{51}\)
