The present ratio of students to teacher at a certain school is 30 to If the student enrollment were to increase by 50 students and the number of teachers were to increase by 5, the ratio of students to teachers would then be 25 to What is the present number of teachers?
সমাধান
সঠিক উত্তর: Option E
Here,
s/t = 30/1 => s=30T
S+50/t+5 = 25/1
Substitute S=30T in the above equation
30t+50 = 25t+125
5t = 75 t=15
