The average of 4 numbers is 18. If each number is decreased by 6, what is the new average? MCQ with Answer and Explanation

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The average of 4 numbers is 18. If each number is decreased by 6, what is the new average?

A. 12

B. 6

C. 24

D. 18

Answer: Option A

Solution (By JKSSB Mock Tests)

New average =18-6=12.

This question belongs to: Maths Average

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Question #1

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Average of 30, 40, 50, 60, 70 is

A. 48

B. 50

C. 52

D. 55

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Correct Answer: Option B

Explanation:
Sum=250. Average=50.

This question belongs to: Maths Average

Question #2

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Average of 8 numbers 1600. If average of 5 is 1595, average of remaining 3?

A. 1607

B. 1610

C. 1605

D. 1608.33

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Correct Answer: Option D

Explanation:
Sum8=12800. Sum5=7975. Remaining=4825. Average≈1608.33.

This question belongs to: Maths Average

Question #3

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Average of 10,20,30,40 is

A. 25

B. 22.5

C. 30

D. 20

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Correct Answer: Option A

Explanation:
100/4=25.

This question belongs to: Maths Average

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