Answer:
answer is 14 teachers
Step-by-step explanation:
Since, the number of teachers decreases so number of teacher will increase. Thus, this is an example direct proportion
Teacher Student
2 15
X 105
2 / x = 15/105
2x = 15/105
x = 15*2/105 [ since 105 divided by 15 its 7]
x = 7^ * 2
= 14
