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Q. The average height of 30 girls out of a class of 40 is 160 cms and that of the remaining girls is 156 cms. the average height of the whole class is ?

  • (A) 156 cm
  • (B) 159 cm
  • (C) 161 cm
  • (D) 160 cm
  • Correct Answer - Option(D)
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  • Filed under category Math
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