The average of 30 integers is 5. Among these 30 integers, there are exactly 20 which do not exceed 5. What is the highest possible value of the average of these 20 integers?a) 3.5b) 5c) 4.5d) 4Correct answer is option 'C'. Can you explain this answer?

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The average of 30 integers is 5. Among these 30 integers, there are exactly 20 which do not exceed 5. What is the highest possible value of the average of these 20 integers?

a)
3.5
b)
5
c)
4.5
d)
4

Correct answer is option 'C'. Can you explain this answer?

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The average of 30 integers is 5. Among these 30 integers, there are ex...

It is given that the average of the 30 integers = 5

Sum of the 30 integers = 30*5=150

There are exactly 20 integers whose value is less than 5.

To maximise the average of the 20-integers, we have to assign minimum value to each of the remaining 10 integers

so the sum of 10 integers = 10*6=60

The sum of the 20 integers = 150-60 = 90

Average of 20 integers = 90/20=4.5

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The average of 30 integers is 5. Among these 30 integers, there are exactly 20 which do not exceed 5. What is the highest possible value of the average of these 20 integers?a) 3.5b) 5c) 4.5d) 4Correct answer is option 'C'. Can you explain this answer?

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