Average of 12 numbers 370. If average of 8 is 365, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 370. If average of 8 is 365, average of remaining 4?

A. 382

B. 375

C. 378

D. 380

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum12=4440. Sum8=2920. Remaining=1520. Average=380.

This question belongs to: Maths Average

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Question #1

The average of 5 numbers is 40. If one number is 60, find the average of the remaining 4.

A. 36

B. 33.75

C. 35

D. 34

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Correct Answer: Option C

Explanation:
Sum=5×40=200. Remaining sum=200-60=140. Avg=140/4=35.

This question belongs to: Maths Average

Question #2

Average of 25 numbers is 36. If one number 48 is replaced by 24, new average?

A. 35.04

B. 36

C. 34

D. 35

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Correct Answer: Option A

Explanation:
Change -24, decrease 0.96, new≈35.04.

This question belongs to: Maths Average

Question #3

The average of 7 numbers is 45. If each number is decreased by 3, what is the new average?

A. 39

B. 45

C. 42

D. 48

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Correct Answer: Option C

Explanation:
New average =45-3=42.

This question belongs to: Maths Average

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