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. 87

C. 58

D. 86

Answer: Option B

Solution (By JKSSB Mock Tests)

New average =29×3=87.

This question belongs to: Maths Average

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Question #1

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Average of 15 numbers 260. If average of 9 is 255, average of remaining 6?

A. 265

B. 267.5

C. 270

D. 268

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Correct Answer: Option B

Explanation:
Sum15=3900. Sum9=2295. Remaining=1605. Average=267.5.

This question belongs to: Maths Average

Question #2

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Average of 675,900,1125 is

A. 895

B. 900

C. 890

D. 910

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Correct Answer: Option B

Explanation:
2700/3=900.

This question belongs to: Maths Average

Question #3

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Average of 12 numbers 2770. If average of 8 is 2765, average of remaining 4?

A. 2775

B. 2778

C. 2782

D. 2780

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Correct Answer: Option D

Explanation:
Sum12=33240. Sum8=22120. Remaining=11120. Average=2780.

This question belongs to: Maths Average

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