Average of 12 numbers 520. If average of 8 is 515, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 520. If average of 8 is 515, average of remaining 4?

A. 528

B. 530

C. 525

D. 532

Answer: Option B

Solution (By JKExamLibrary)

Sum12=6240. Sum8=4120. Remaining=2120. Average=530.

This question belongs to: Maths Average

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Question #1 Report Error

The average of 510,680,850 is

A. 670

B. 675

C. 690

D. 680

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Correct Answer: Option D

Explanation:
2040/3=680.

This question belongs to: Maths Average

Question #2 Report Error

Average of 20 numbers 48. If two numbers 40 and 60 replaced by 50 and 70, new average?

A. 47

B. 49

C. 50

D. 48

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Correct Answer: Option B

Explanation:
Net +20, increase 1. New=49.

This question belongs to: Maths Average

Question #3 Report Error

Average of 10 numbers 2680. If average of 6 is 2675, average of remaining 4?

A. 2690

B. 2687.5

C. 2686

D. 2685

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Correct Answer: Option B

Explanation:
Sum10=26800. Sum6=16050. Remaining=10750. Average=2687.5.

This question belongs to: Maths Average

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