Question

There are two
examinations rooms A and
B. If 10 students are sent
from A to B, then the
number of students in
each room is the same. If
10 candidates are sent
from B to A, then the
number of students in A is
three times the number of
students in B. The number
of students in room A is?
O 50
60
0 70
80​

Answer 1

Answer:

A= 100 and B= 80

Explanation:

Let the no: of students in rooms A and B be x and y respectively.

Then, x−10=y+10

⇒x−y=20⟶(i)

and x+20=2(y−20)

⇒x−2y=−60⟶(ii)

Solving (i) and (ii) simultaneously,we get ,  

x=100 & y=80

∴ The no: of students in room A is 100 & in room B is 80.

Mark me as brainly