The average of 12 numbers is 18. If each number is increased by 5, what is the new average? MCQ with Answer and Explanation

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The average of 12 numbers is 18. If each number is increased by 5, what is the new average?

A. 28

B. 18

C. 23

D. 13

Answer: Option C

Solution (By JKSSB Mock Tests)

New average =18+5=23.

This question belongs to: Maths Average

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Question #1

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Average of 12 numbers 1670. If average of 8 is 1665, average of remaining 4?

A. 1680

B. 1678

C. 1682

D. 1675

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Correct Answer: Option A

Explanation:
Sum12=20040. Sum8=13320. Remaining=6720. Average=1680.

This question belongs to: Maths Average

Question #2

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Average of 20 numbers 45. If 5 numbers average 50 included, new average of 25?

A. 45.5

B. 46

C. 44

D. 47

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Correct Answer: Option B

Explanation:
Total20=900. Added=250. Total1150/25=46.

This question belongs to: Maths Average

Question #3

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

A. 45

B. 48

C. 39

D. 42

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Correct Answer: Option D

Explanation:
New average =45-3=42.

This question belongs to: Maths Average

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