List of practice Questions

The number of students in three classes is in the ratio \(3:13:6\). If 18 students are added to each class, the ratio changes to \(15:35:21\).
The total number of students in all the three classes in the beginning was:
The ratio of boys to girls in a class is 7 to 3. Among the options below, an acceptable value for the total number of students in the class is: