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Q:

The average of 30 numbers is 40 and that of other 40 numbers is 30. The average of all the numbers is

  • 1
    33
  • 2
    34.5
  • 3
    $$34{2\over7}$$
  • 4
    35
  • Show Answer
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Answer : 3. "$$34{2\over7}$$ "

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