Exam rooms A and B are located on the same floor. The number of pupils in each room is the same if 10 students are sent from A to B. If 20 candidates are transferred from B to A, the number of students in A is double that of B. Room A has the following number of students:
A. 20
B. 80
C. 100
D. 200
Answer:C
Exam rooms A and B are located on the same floor. The number of pupils in each room is the same if 10 students are sent from A to B. If 20 candidates are transferred from B to A, the number of students in A is double that of B. Room A has the following number of students:
A. 20 B. 80 C. 100 D. 200