Question

Students of a class are made to stand in rows. If one student is extra in a row, there
he 2 rows less. If one student is less in a row there would be 3 rows more. Find the number of
EXAMPLE 10 Students o
would be 2 rows less. If
students in the class..​

Answer 1

Answer:

1. let students =x
2. let rows =y

Step-by-step explanation:

and total rows=xy

• then,(x+1)(y-2)=xy
• xy-2x+y-2=xy

then xy and xy are cancelled

-2x+y=2 eq-1

then,

• (x-1)(y+3)=xy
• xy+3x-y-3=xy
• xy and xy are cancelled
• 3x-y=3 eq-2

from eq-1 & 2,

3x-y=3

-2x+y=2

then x=5

and y=12.

Thank you