Question

The number of students in three
classes are in the ratio 2:3:4 If
12 students are increased in each.
class this ratio changes to 8:11:14.
The total number of students in
the three classes at the beginning
Was ?​

Answer 1

Answer:

Let the number of students be 2x, 3x and 4x respectively.

Total students= 2x+3x+4x = 9x

According to the question,

2x+12/3x+12 = 8/11

or,24x+96=22x+132

or,2x=132-96

or,x=36/2= 18

Hence, original number of students

=9x

=9×18

=162