How many schools attended our CAD workshops and how many students were involved?

• A. 10 schools, 100 students
• B. 20 schools, 150 students
• C. 15 schools, 120 students
• D. 25 schools, 180 students

Answer: (B)

Two numbers are given together as a summary of what happened: how many schools attended the CAD workshops and how many students participated. The data you’re using reports twenty schools and one hundred fifty students. Matching both figures exactly is why this option is the best—the two quantities come from the same source, so they should pair together as shown. If you divide the total students by the number of schools, you get an average of 7.5 students per school, which is plausible since some schools can contribute more than others. The other options mix different counts and don’t reproduce the same paired totals.