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Question
The average of 11 results is 60. If the average of first six results is 58 and that of last six is 63, find the 6th results.
Options
66
55
64
68
MCQ
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Solution
66
Explanation:
The average of 11 results = 60
The total of 11 results = 60 × 11 = 660
Average of first six results = 58
Average oflast six results = 63
Total of first six results= 58 × 6 = 348
Total of last six results = 63 × 6 = 378
Sixth results = Total of first and last six results = Total of 11 results
= (348 + 378) – 660
= 726 – 660
= 66
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Average (Entrance Exam)
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