The average of 6 numbers is 25. If 5 is subtracted from each, new average? MCQ with Answer and Explanation

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The average of 6 numbers is 25. If 5 is subtracted from each, new average?

A. 20

B. 25

C. 22

D. 30

Answer: Option A

Solution (By JKSSB Mock Tests)

New average =25 -5 =20.

This question belongs to: Maths Average

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Question #1

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The average of 12 numbers is 15. If each number is multiplied by 2 and then 3 is added, what is the new average?

A. 30

B. 27

C. 33

D. 36

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Correct Answer: Option C

Explanation:
New average = (old average ×2)+3 = (15×2)+3=33.

This question belongs to: Maths Average

Question #2

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Average of 10 numbers 1080. If average of 6 is 1075, average of remaining 4?

A. 1085

B. 1090

C. 1087.5

D. 1086

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Correct Answer: Option C

Explanation:
Sum10=10800. Sum6=6450. Remaining=4350. Average=1087.5.

This question belongs to: Maths Average

Question #3

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Average of 9 numbers 2690. If average of 6 is 2685, average of remaining 3?

A. 2698

B. 2705

C. 2700

D. 2695

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Correct Answer: Option C

Explanation:
Sum9=24210. Sum6=16110. Remaining=8100. Average=2700.

This question belongs to: Maths Average

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