Average of 3 numbers is 25. If two average 20, third is MCQ with Answer and Explanation

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Average of 3 numbers is 25. If two average 20, third is

A. 25

B. 35

C. 40

D. 30

Answer: Option B

Solution (By JKSSB Mock Tests)

Third =75 -40=35.

This question belongs to: Maths Average

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Question #1

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

A. 86

B. 58

C. 29

D. 87

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Correct Answer: Option D

Explanation:
New average =29×3=87.

This question belongs to: Maths Average

Question #2

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The average of 63,72,81 is

A. 75

B. 72

C. 68

D. 70

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Correct Answer: Option B

Explanation:
216/3=72.

This question belongs to: Maths Average

Question #3

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Average of 8 numbers 2400. If average of 5 is 2395, average of remaining 3?

A. 2407

B. 2410

C. 2408.33

D. 2405

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Correct Answer: Option C

Explanation:
Sum8=19200. Sum5=11975. Remaining=7225. Average≈2408.33.

This question belongs to: Maths Average

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