Average of 12 numbers 2720. If average of 8 is 2715, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 2720. If average of 8 is 2715, average of remaining 4?

A. 2728

B. 2732

C. 2725

D. 2730

Answer: Option D

Solution (By JKExamLibrary)

Sum12=32640. Sum8=21720. Remaining=10920. Average=2730.

This question belongs to: Maths Average

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Question #1

The average of 8 numbers is 31. If each number is increased by 3, what is the new average?

A. 28

B. 31

C. 37

D. 34

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Correct Answer: Option D

Explanation:
New average =31+3=34.

This question belongs to: Maths Average

Question #2

The average of 1500,2000,2500 is

A. 1995

B. 1990

C. 2010

D. 2000

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Correct Answer: Option D

Explanation:
6000/3=2000.

This question belongs to: Maths Average

Question #3

The average of 3 numbers is 12. If the numbers are in the ratio 1:2:3, find the smallest.

A. 10

B. 6

C. 4

D. 8

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Correct Answer: Option B

Explanation:
Sum=3×12=36. Ratio sum=6. Smallest = (1/6)×36=6.

This question belongs to: Maths Average

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