Question

. The students in the three classes are in the ratio of 2:3:5.
If 20 students are increased in each class, the ratio
changes to 4:5:7. The total numbers of students in the
three classes before the increase were what? please answer along with explanation.​

Answer 1

hope it's helpful

please mark breanliest

Answer 2

Answer:

Given 2:3:5

Therefore 20/10:30/10:50/10

Now, (20+20)/10: (30+20)/10: (50+20)/10

=40/10: 50/10: 70/10

= 4:5;7