Average of 12 numbers 1820. If average of 8 is 1815, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 1820. If average of 8 is 1815, average of remaining 4?

A. 1825

B. 1832

C. 1830

D. 1828

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum12=21840. Sum8=14520. Remaining=7320. Average=1830.

This question belongs to: Maths Average

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Question #1

Average of 8 numbers 1000. If average of 5 is 995, average of remaining 3?

A. 1010

B. 1007

C. 1008.33

D. 1005

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Correct Answer: Option C

Explanation:
Sum8=8000. Sum5=4975. Remaining=3025. Average≈1008.33.

This question belongs to: Maths Average

Question #2

The average of 6 numbers is 25. If 5 numbers average 24, the 6th is

A. 29

B. 28

C. 30

D. 26

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Correct Answer: Option A

Explanation:
6th =150 -120=30? Sum6=150. 5*24=120. 30.

This question belongs to: Maths Average

Question #3

Average of 21,42,63 is

A. 40

B. 45

C. 35

D. 42

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Correct Answer: Option D

Explanation:
126/3=42.

This question belongs to: Maths Average

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