Shuffling Students Between Examination Rooms

Algebra Level 2

For the End-Of-Year examinations, students are sent to two examinations room, A and B.

If 10 additional students were sent from room A to room B, then the number of students in each room will be the same.

If however, 20 additional students were sent from room B to room A, then the number of students in room A would be double the number of students in room B.

How many students should there be in room A?

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