Average of 8 numbers 700. If average of 5 is 695, average of remaining 3? MCQ with Answer and Explanation

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Average of 8 numbers 700. If average of 5 is 695, average of remaining 3?

A. 708.33

B. 707

C. 710

D. 705

Answer: Option A

Solution (By JKSSB Mock Tests)

Sum8=5600. Sum5=3475. Remaining=2125. Average≈708.33.

This question belongs to: Maths Average

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Question #1

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The average of 15 observations is 20. If each observation is increased by 3, what is the new average?

A. 30

B. 17

C. 20

D. 23

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Correct Answer: Option D

Explanation:
New average = old average + increase =20+3=23.

This question belongs to: Maths Average

Question #2

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Average of 8 numbers is 25. If 3 is added to each number, what will be the new average?

A. 28

B. 26

C. 27

D. 25

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Correct Answer: Option A

Explanation:
When a constant is added to each number, the average also increases by the same constant. New average = 25 + 3 = 28.

This question belongs to: Maths Average

Question #3

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Average of 12 numbers 1520. If average of 8 is 1515, average of remaining 4?

A. 1528

B. 1532

C. 1530

D. 1525

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Correct Answer: Option C

Explanation:
Sum12=18240. Sum8=12120. Remaining=6120. Average=1530.

This question belongs to: Maths Average

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