Average of 12 numbers 1920. If average of 8 is 1915, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 1920. If average of 8 is 1915, average of remaining 4?

A. 1932

B. 1928

C. 1925

D. 1930

Answer: Option D

Solution (By JKExamLibrary)

Sum12=23040. Sum8=15320. Remaining=7720. Average=1930.

This question belongs to: Maths Average

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Question #1

The average of 2 numbers is 15. If one number is 10, what is the other?

A. 5

B. 25

C. 15

D. 20

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Correct Answer: Option D

Explanation:
Sum =2×15=30. Other =30-10=20.

This question belongs to: Maths Average

Question #2

Average salary of 20 employees Rs. 8000. If manager Rs. 20000 included, new average?

A. 8200

B. 8500

C. 8800

D. 9000

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Correct Answer: Option B

Explanation:
Total=160000. New total=180000. /21≈8571 approx 8500.

This question belongs to: Maths Average

Question #3

The average of 4 numbers is 26. If each number is decreased by 2, what is the new average?

A. 24

B. 26

C. 28

D. 22

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Correct Answer: Option A

Explanation:
New average =26-2=24.

This question belongs to: Maths Average

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