The students in three classes are in the ratio 2 : 3 : 5. If 20 students are increased in each class….

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The students in three classes are in the ratio 2 : 3 : 5. If 20 students are increased in each class, then the ratio changes to 4 : 5 : 7. The total number of students before the increase were

Options :-

1. 10
2. 90
3. 100
4. None of these

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