Question: The students in three classes are in the ratio 4:6 :9. If 12 students are increased in each class, the ratio changes to 7:9:12.

The students in three classes are in the ratio 4:6 :9. If

The students in three classes are in the ratio 4:6 :9. If 12 students are increased in each class, the ratio changes to 7:9:12. Then the total number of students in the 2nd Class before the increase is 1. 36 2. 24 3. 54 4. 30 5. 23

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