The average of 8 numbers is 31. If each number is increased by 3, what is the new average? MCQ with Answer and Explanation

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

A. 34

B. 37

C. 31

D. 28

Answer: Option A

Solution (By JKSSB Mock Tests)

New average =31+3=34.

This question belongs to: Maths Average

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Question #1

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Average of 12 numbers 45. If average of 9 is 42, average of remaining 3?

A. 54

B. 52

C. 48

D. 50

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Correct Answer: Option B

Explanation:
Sum12=540. Sum9=378. Remaining=162. Average=54.

This question belongs to: Maths Average

Question #2

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Average of 15 numbers 1410. If average of 9 is 1405, average of remaining 6?

A. 1417.5

B. 1415

C. 1418

D. 1420

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Correct Answer: Option A

Explanation:
Sum15=21150. Sum9=12645. Remaining=8505. Average=1417.5.

This question belongs to: Maths Average

Question #3

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If average of 5 numbers is 36 and average of 3 is 30, average of remaining 2?

A. 40

B. 42

C. 48

D. 45

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Correct Answer: Option D

Explanation:
Sum5=180. Sum3=90. Remaining=90. Average=45.

This question belongs to: Maths Average

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