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Q. The mean weight of 100 students in a class is 46 kg. The mean weight of boys is 50 and of girls is 40 kg. Therefore, the number of boys is:

  • (A) 50
  • (B) 60
  • (C) 70
  • (D) 65
  • Correct Answer - Option(B)
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  • Filed under category Math
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