Average of 12 numbers 2320. If average of 8 is 2315, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 2320. If average of 8 is 2315, average of remaining 4?

A. 2332

B. 2328

C. 2330

D. 2325

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum12=27840. Sum8=18520. Remaining=9320. Average=2330.

This question belongs to: Maths Average

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Question #1

The average of 6 numbers is 14. If each number is divided by 2, what is the new average?

A. 8

B. 7

C. 9

D. 6

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Correct Answer: Option B

Explanation:
New average =14/2=7.

This question belongs to: Maths Average

Question #2

Average of 1 to 25 is

A. 13

B. 12

C. 12.5

D. 13.5

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Correct Answer: Option A

Explanation:
(25+1)/2=13.

This question belongs to: Maths Average

Question #3

What is average of all multiples of 7 from 7 to 70?

A. 38.5

B. 35

C. 38

D. 39

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Correct Answer: Option A

Explanation:
Multiples: 7,14,...,70 (10 numbers). Average=(7+70)/2=38.5.

This question belongs to: Maths Average

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