The average of 9 numbers is 35. If each number is decreased by 5, what is the new average? MCQ with Answer and Explanation

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The average of 9 numbers is 35. If each number is decreased by 5, what is the new average?

A. 35

B. 25

C. 30

D. 40

Answer: Option C

Solution (By JKSSB Mock Tests)

New average =35-5=30.

This question belongs to: Maths Average

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Question #1

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The average of 3 numbers is 22. If the numbers are in the ratio 2:3:6, find the largest.

A. 42

B. 36

C. 30

D. 24

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Correct Answer: Option B

Explanation:
Sum=3×22=66. Ratio sum=2+3+6=11. Largest = (6/11)×66=36.

This question belongs to: Maths Average

Question #2

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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. 27

B. 26

C. 25

D. 24

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Correct Answer: Option C

Explanation:
Net zero change. Average remains 25.

This question belongs to: Maths Average

Question #3

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Average of 15 numbers 260. If average of 9 is 255, average of remaining 6?

A. 265

B. 270

C. 268

D. 267.5

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Correct Answer: Option D

Explanation:
Sum15=3900. Sum9=2295. Remaining=1605. Average=267.5.

This question belongs to: Maths Average

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