Can you solve the following question from mathematics? If you do answer it please make sure that the answer is correct. ( The question is of std. 10 CBSE. )

1) Students of a class are made to stand in rows.If 1 student is extra in a row there would be 2 rows less.If 1 student is less in a row there would be 3 rows more.Find the number of students.

which chapter in maths book or in reference
The question is from the chapter " Pair of Linear Equations in Two Variables".


The answer would be 1

what about y or x. you got only one value.