The average of 10 reading is 25 5 In this the average of first three is 20 and the next four is 26 I...........

Quantitative Aptitude ( CCS) Average

The average of 10 reading is 25.5. In this the average of first three is 20 and the next four is 26. If the eight reading is 5 less than the night one and also 8 less than the tenth one, then find the eight reading?

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Explanation:

sum of all ten reading = 255
sum of first three = 60 and sum of next 4 = 104.
Sum of 8th, 9th and 10th reading = 91 = 3*x + 13
x = 26

By: Sandeep Dubey

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The average of 10 reading is 25 5 In this the average of first three is 20 and the next four is 26 I...........

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Explanation:

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