Average of 8 numbers 140. If average of 5 is 135, average of remaining 3? MCQ with Answer and Explanation

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Average of 8 numbers 140. If average of 5 is 135, average of remaining 3?

A. 147

B. 150

C. 145

D. 148.33

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum8=1120. Sum5=675. Remaining=445. Average≈148.33.

This question belongs to: Maths Average

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Question #1

Average of 12 numbers is 40. If average of first 7 is 38, what is average of last 5?

A. 42

B. 44

C. 43

D. 40

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Correct Answer: Option C

Explanation:
Sum12=480. Sum first7=266. Sum last5=214. Average last5=42.8 ≈ but use exact numbers.

This question belongs to: Maths Average

Question #2

Average of 15 numbers 910. If average of 9 is 905, average of remaining 6?

A. 918

B. 915

C. 920

D. 917.5

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Correct Answer: Option D

Explanation:
Sum15=13650. Sum9=8145. Remaining=5505. Average=917.5.

This question belongs to: Maths Average

Question #3

The average of 3 numbers is 28. If two numbers are 25 and 30, find the third.

A. 26

B. 27

C. 29

D. 31

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Correct Answer: Option C

Explanation:
Sum=3×28=84. Third =84-25-30=29.

This question belongs to: Maths Average

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