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Q: The average mathematics marks of two section A and B of class IX in the annual examination is 74. The average marks of Section A is 77.5 and that of Section B is 70. The ratio of number of student of section A and B is: |
A. | 07:08:00 |
B. | 08:05:00 |
C. | 08:07:00 |
D. | 07:05:00 |
Answer» D. 07:05:00 | |