Average of 15 numbers 1160. If average of 9 is 1155, average of remaining 6? MCQ with Answer and Explanation

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Question #1

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Average of 5,10,15,20,25,30,35,40 is

A. 20

B. 23

C. 22.5

D. 25

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Correct Answer: Option C

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Explanation:
180/8=22.5.

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This question belongs to: Maths Average

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Question #2

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The average of 5 numbers is 18. If each number is multiplied by 3, what is the new average?

A. 36

B. 45

C. 60

D. 54

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Correct Answer: Option D

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Explanation:
New average =18×3=54.

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This question belongs to: Maths Average

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Question #3

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The average of 5 numbers is 32. If one number is excluded, the average becomes 30. Find the excluded number.

A. 42

B. 38

C. 36

D. 40

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Correct Answer: Option D

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Explanation:
Sum of 5 =160. Sum of 4=4×30=120. Excluded=160-120=40.

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This question belongs to: Maths Average

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