Average of 12 numbers 55. If average of 8 is 50, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 55. If average of 8 is 50, average of remaining 4?

A. 70

B. 60

C. 62.5

D. 65

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum12=660. Sum8=400. Remaining=260. Average=65.

This question belongs to: Maths Average

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Question #1

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The average of 8 numbers is 27. If each number is decreased by 4, what is the new average?

A. 27

B. 31

C. 19

D. 23

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Correct Answer: Option D

Explanation:
New average =27-4=23.

This question belongs to: Maths Average

Question #2

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Average of 40 numbers 35. If 10 numbers average 40 added, new average?

A. 35

B. 37

C. 36

D. 36.25

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Correct Answer: Option C

Explanation:
Total40=1400. Added=400. Total1800/50=36.

This question belongs to: Maths Average

Question #3

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Average of 10 numbers 2530. If average of 6 is 2525, average of remaining 4?

A. 2535

B. 2536

C. 2540

D. 2537.5

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Correct Answer: Option D

Explanation:
Sum10=25300. Sum6=15150. Remaining=10150. Average=2537.5.

This question belongs to: Maths Average

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