6Â years, 2Â months ago
Average of x observation is 30, average of x otherobservations is 33 and average of remaining x observations is 42. Average of all the observations isA. 34 B. 35 C. 36 D. Cannot be deter-mined E. None of these
Please give me a detailed solution as I am getting 35 as answer but the right answer is D according to the answer key.
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