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Question
The average of 18 numbers is 37.5. If six numbers of average x are added to them, then the average of all the numbers increases by one. The value of x is:
Options
40
41.5
42
56.7
MCQ
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Solution
56.7
Explanation:
Let total number = 4
Average = `(3 xx 5.6 - 1 xx 8.4)/4`
⇒ Average = 54.6 + 2.1 = 56.7
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Average (Entrance Exam)
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