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The ratio of the students in schools ...

The ratio of the students in schools A, B and C is 5 : 4 : 7. If the number of students in the schools are increased by 20%, 25% and 20% respectively, what would be the new ratio of the students in schools A, B and C? `5:5:7` b. `30 : 25 : 42` c. `30 : 20 : 49` d. cannot be determined e. none of these

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