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Q: The average marks obtained in mathematics by the students of a class was 70. The average marks obtained by the boys is 20% more than the average marks obtained by the girls. If the ratio of the number of boys to that of girls is 3 : 2 then the average marks obtained by the girls is :
  • A. 65
  • B. 62.5
  • C. 63
  • D. 63.5
Correct Answer: Option B -
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Explanations:

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