72 total magazine subscriptions sold ÷ 24 students = 3 magazines sold per students
98 total magazine subscriptions sold ÷ 28 students ≈ 3.5 magazines sold per students
The answer would be Mr.Garcia's homeroom sold more magazine subscriptions because each student sold more than 3 magazines compared to that of Mr.Brwon's homeroom in which each student only sold 3 magazines.
