The average of 7 numbers is 29. If each number is multiplied by 3, what is the new average? MCQ with Answer and Explanation

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The average of 7 numbers is 29. If each number is multiplied by 3, what is the new average?

A. 29

B. 86

C. 87

D. 58

Answer: Option C

Solution (By JKExamLibrary)

New average =29×3=87.

This question belongs to: Maths Average

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Question #1

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Average of 9 numbers 45. If average of first 5 is 42, average of last 5 is 48, 5th number?

A. 45

B. 48

C. 42

D. 46

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Correct Answer: Option A

Explanation:
Sum9=405. Sum1-5=210. Sum5-9=240. 5th=210+240-405=45.

This question belongs to: Maths Average

Question #2

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The average of 10 numbers is 12. If each number is divided by 4, what is the new average?

A. 2

B. 3

C. 5

D. 4

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Correct Answer: Option B

Explanation:
New average =12/4=3.

This question belongs to: Maths Average

Question #3

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The average of 8,16,24,32 is

A. 24

B. 20

C. 22

D. 18

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Correct Answer: Option B

Explanation:
Sum=80. Average=20.

This question belongs to: Maths Average

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