Question

There are 2 classes A and B. If 10 students leave class A and join class B, then the ratio of the number of students in class A and class B would reverse. Find the difference in the number of students in class A and class B.
1) 10 2) 20 3) 30
4) 40​

Answer 1

Answer:

I think option 2 is correct......

I hope it will helpful for u...