The average of 8 numbers is 25. If 5 is added to each of first 4 and subtracted from each of last 4, new average? MCQ with Answer and Explanation

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The average of 8 numbers is 25. If 5 is added to each of first 4 and subtracted from each of last 4, new average?

A. 26

B. 25

C. 27

D. 24

Answer: Option B

Solution (By JKSSB Mock Tests)

Net zero change. Average remains 25.

This question belongs to: Maths Average

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Practice More Average Questions

Question #1

The average of 12,18,24,30 is

A. 22

B. 20

C. 21

D. 24

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Correct Answer: Option C

Explanation:
Sum=84. Average=21.

This question belongs to: Maths Average

Question #2

Average of 15 numbers 1360. If average of 9 is 1355, average of remaining 6?

A. 1365

B. 1367.5

C. 1370

D. 1368

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Correct Answer: Option B

Explanation:
Sum15=20400. Sum9=12195. Remaining=8205. Average=1367.5.

This question belongs to: Maths Average

Question #3

The average of 9 numbers is 27. If one number is 36, find the average of the remaining 8.

A. 25.5

B. 26.5

C. 26

D. 25.875

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Correct Answer: Option D

Explanation:
Sum=9×27=243. Remaining sum=243-36=207. Avg=207/8=25.875.

This question belongs to: Maths Average

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