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. 2325

B. 2330

C. 2332

D. 2328

Answer: Option B

Solution (By JKExamLibrary)

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

This question belongs to: Maths Average

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Question #1

Average of 15 numbers 50. If average of 10 is 55, average of remaining 5?

A. 42

B. 40

C. 35

D. 45

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Correct Answer: Option B

Explanation:
Sum15=750. Sum10=550. Remaining=200. Average=40.

This question belongs to: Maths Average

Question #2

The average of 55,65,75,85 is

A. 72

B. 65

C. 75

D. 70

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Correct Answer: Option D

Explanation:
280/4=70.

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Question #3

Average of all multiples of 10 from 10 to 100 is

A. 45

B. 55

C. 50

D. 60

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Correct Answer: Option B

Explanation:
10 numbers. Average=(10+100)/2=55.

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