Average of 12 numbers 2020. If average of 8 is 2015, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 2020. If average of 8 is 2015, average of remaining 4?

A. 2028

B. 2032

C. 2025

D. 2030

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum12=24240. Sum8=16120. Remaining=8120. Average=2030.

This question belongs to: Maths Average

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Question #1

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

A. 42

B. 30

C. 48

D. 36

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Correct Answer: Option D

Explanation:
New average =42-6=36.

This question belongs to: Maths Average

Question #2

Average of 15,25,35 is

A. 30

B. 25

C. 28

D. 20

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Correct Answer: Option B

Explanation:
Sum=75. Average=25.

This question belongs to: Maths Average

Question #3

The average of 6 numbers is 24. If one number is 36, find the average of the rest.

A. 21.6

B. 22.8

C. 20.4

D. 22

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Correct Answer: Option A

Explanation:
Sum=6×24=144. Rest sum=144-36=108. Avg=108/5=21.6.

This question belongs to: Maths Average

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