If there are fifty students, how many ACFL staff are implied by a 1:25 ratio?

• A. One
• B. Two
• C. Three
• D. Four

Answer: (B)

A 1:25 ratio means one staff member for every 25 students. With 50 students, you have two groups of 25, so you need two staff members. You can check with a quick proportion: 1/25 = x/50, which gives x = 2. This shows doubling the students doubles the staff for this ratio. One would cover only 25, three would cover 75, and four would cover 100, so they don’t fit 50 students.