Problem
Using this two-way table, work out the percentage of square counters that are blue. If your answer is a decimal, then round it to 1 d.p. \begin{tabular}{|c|c|c|} \hline & Square & Round \\ \hline Red & 13 & 18 \\ \hline Blue & 7 & 12 \\ \hline \end{tabular}
Solution
Step 1 ：Find the total number of square counters: \(13 + 7 = 20\)
Step 2 ：Calculate the percentage of blue square counters: \(\frac{7}{20} \times 100 = 35.0\%
Step 3 ：Final Answer: \(\boxed{35.0\%}\)
