Discussion Forum
Que.  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 20 candidates are sent from B to A, then the number of students in A is double the number of students in B. The number of students in room A is: 
a.  20 
b.  80 
c.  100 
d.  200 
Correct Answer:100
