Average of 12 numbers 920. If average of 8 is 915, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 920. If average of 8 is 915, average of remaining 4?

A. 925

B. 928

C. 932

D. 930

Answer: Option D

Solution (By JKExamLibrary)

Sum12=11040. Sum8=7320. Remaining=3720. Average=930.

This question belongs to: Maths Average

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Question #1 Report Error

If the average of 8 numbers is 22 and average of 4 is 20, average of other 4 is

A. 26

B. 23

C. 22

D. 24

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Correct Answer: Option D

Explanation:
Sum8=176. Sum4=80. Other sum=96. Average=24.

This question belongs to: Maths Average

Question #2 Report Error

Average of 25,35,45,55 is

A. 38

B. 42

C. 45

D. 40

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Correct Answer: Option D

Explanation:
Sum=160. Average=40.

This question belongs to: Maths Average

Question #3 Report Error

The average of first 15 multiples of 3 is

A. 27

B. 25

C. 22.5

D. 24

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Correct Answer: Option D

Explanation:
3*(1+15)/2 =3*8=24.

This question belongs to: Maths Average

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