1.

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


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