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Q: The average marks of boys in a class is 60 and that of girls is 80 If the average marks of the whole class is 72, then what is the ratio of number of boys to girls ?
  • A. 4 : 3
  • B. 3 : 4
  • C. 2 : 3
  • D. 3 : 2
Correct Answer: Option C -
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Explanations:

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