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There are tow 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 20 candidates are sent from B to A, then the number of students in a is double the number of students in B. what is the number of students in room A?

There are tow 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 20 candidates are sent from B to A, then the number of students in a is double the number of students in B. what is the number of students in room A? Correct Answer 100

Let, the no of students in room A and B be x and y Then, x - 10 = y + 10 and, x + 20 = 2 ( y - 20) Solving, x = 100, y = 80

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