Question

Students of a class are made to stand in rows 3 students are extra in a row there would be 1 roller swift 3 students are less in a row there would be 2 rows more find the number of students in the class

Answer 1

Answer:

Let the number of rows be x

Number of students in 1 row = y

According to the question,

(y + 3) (x - 1) = xy  xy + 3x - y - 3 = xy

Or 3x - y = 3 .................................(i)

(y - 3) (x + 2) = xy  xy - 3x + 2y - 6 = xy

Or -3x + 2y = 6 ............................(ii)

putting (i) and (ii), we get,

y = 9

 3x - 9 = 3

]x = 4

Number of students = xy = 4 ×9 = 36

number of students = 36

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@GauravSaxena01