The average of 6 numbers is 28. If two numbers are 22 and 30, find the average of the remaining four. MCQ with Answer and Explanation

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The average of 6 numbers is 28. If two numbers are 22 and 30, find the average of the remaining four.

A. 28.5

B. 29

C. 28

D. 29.5

Answer: Option B

Solution (By JKExamLibrary)

Sum=6×28=168. Sum of two=22+30=52. Sum of four=116. Avg=116/4=29.

This question belongs to: Maths Average

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Question #1

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The average of 9 numbers is 27. If one number is wrongly taken as 45 instead of 27, the incorrect average is:

A. 30

B. 28

C. 31

D. 29

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Correct Answer: Option D

Explanation:
Correct total = 9×27 = 243. Incorrect total = 243+18 = 261. Incorrect average = 261/9 = 29.

This question belongs to: Maths Average

Question #2

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Average of 12 numbers 160. If average of 8 is 155, average of remaining 4?

A. 168

B. 165

C. 172

D. 170

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Correct Answer: Option D

Explanation:
Sum12=1920. Sum8=1240. Remaining=680. Average=170.

This question belongs to: Maths Average

Question #3

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Find the average of all numbers from 1 to 25 that are divisible by 5.

A. 14.5

B. 14

C. 15.5

D. 15

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Correct Answer: Option D

Explanation:
Numbers: 5,10,15,20,25 sum=75, count=5, avg=15.

This question belongs to: Maths Average

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