The average of 9 numbers is 42. If each number is decreased by 6, what is the new average? MCQ with Answer and Explanation

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The average of 9 numbers is 42. If each number is decreased by 6, what is the new average?

A. 36

B. 42

C. 48

D. 30

Answer: Option A

Solution (By JKSSB Mock Tests)

New average =42-6=36.

This question belongs to: Maths Average

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Question #1

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The average of 18,36,54 is

A. 40

B. 30

C. 36

D. 32

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Correct Answer: Option C

Explanation:
108/3=36.

This question belongs to: Maths Average

Question #2

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Average of 12 numbers 1920. If average of 8 is 1915, average of remaining 4?

A. 1928

B. 1925

C. 1932

D. 1930

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Correct Answer: Option D

Explanation:
Sum12=23040. Sum8=15320. Remaining=7720. Average=1930.

This question belongs to: Maths Average

Question #3

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Average of 10 numbers 430. If average of 6 is 425, average of remaining 4?

A. 436

B. 437.5

C. 435

D. 440

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Correct Answer: Option B

Explanation:
Sum10=4300. Sum6=2550. Remaining=1750. Average=437.5.

This question belongs to: Maths Average

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