Question 4
In grade 8 of FMO school, there are 120 students distributed into three classes which are 8A, 8B and 8C. If we move 10 students from class 8A to class 8C then the ratio of students in class 8A, 8B, 8C is 7 : 8 : 9. How many students in class 8A are there in the beginning?