there are two exam halls A and B if 10 candidates are sent from A to B the number of students in each room is same or if 20 are sent from B to A a then number of students in is doubled the students in b find the number of students in each room
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x - 10 = y + 10
⟹x−y=20−−−−−(1)
& x + 20 = 2(y - 20)
⟹x−2y=−60−−−−−(2)
on solving eq (1) and (2) we get,
x = 100 and y = 80
⟹x−y=20−−−−−(1)
& x + 20 = 2(y - 20)
⟹x−2y=−60−−−−−(2)
on solving eq (1) and (2) we get,
x = 100 and y = 80
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