Bunuel wrote:
At a certain high school, the student to teacher ratio is 25:1. If the number of students increases by 50% and 10% of teachers are laid off, what would be the new student to teacher ratio? (Assume that no other changes happen)
A. 40:1
B. 125:3
C. 75:2
D. 145:9
E. Cannot be determined
- 10% teacher is the key. We should plug in the value that give the integer for 10% of teacher.
- Let say number of teacher = 10 (10 times the ratio), so the number of stundent = 25*10 = 250.
- Students increase
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