there are 2 rooms a and b.if 10 students are transferred from a to b,then the number of students in each room is same.but if 20 students are send from b to a then the no of students in a is double the number of student in b.find the number of students in each room.

Asked by ayushisingh | 4th Sep, 2010, 09:32: PM

Expert Answer:

Hello,
Let the initial number of students in room a = A 
 and no of students in room b = B.
Then according to the statement:
 
A -10 = B + 10  --- (1)
2 ( B - 20 ) = A + 20    --- (2)
 
Solving the above two equations we get:
A = 100, B =80 
 
 
Regards,

Answered by  | 5th Sep, 2010, 02:37: PM

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