students of a class are made to stand in rows. if one students is extra in a row, there would be 2 rows less. if one student is less in row there would be 3 more. find the nuber of student in class.
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Solution
Le no of rows = x and no of student in each row y
total no of student x*y
By given condition
(x-2)(y+4)=xy (i)
(x+4)(y-4)=xy (ii)
Solve
x=8, y=12
no of student = 12*8 = 96
option 7
Le no of rows = x and no of student in each row y
total no of student x*y
By given condition
(x-2)(y+4)=xy (i)
(x+4)(y-4)=xy (ii)
Solve
x=8, y=12
no of student = 12*8 = 96
option 7
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