Question
The average of 11 results is 50. The average of the
first 6 results is 49 and that of the last 6 results is 52. What is the 6th result?Solution
The Average of 11 results =50 Total of 11 results =50×11=550. Let the 6th number =x The sum of first 5 results =49×(6-x) =294-x. The sum of last 5 results =52(6-x) =312-x ATQ- 294-x+312-x =550-x 606-2x =550-x X =56.
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