Average of 12 numbers 2570. If average of 8 is 2565, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 2570. If average of 8 is 2565, average of remaining 4?

A. 2575

B. 2580

C. 2578

D. 2582

Answer: Option B

Solution (By JKSSB Mock Tests)

Sum12=30840. Sum8=20520. Remaining=10320. Average=2580.

This question belongs to: Maths Average

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Question #1

Average of 9 numbers 2040. If average of 6 is 2035, average of remaining 3?

A. 2050

B. 2055

C. 2045

D. 2048

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Correct Answer: Option A

Explanation:
Sum9=18360. Sum6=12210. Remaining=6150. Average=2050.

This question belongs to: Maths Average

Question #2

Average of 10 numbers 1530. If average of 6 is 1525, average of remaining 4?

A. 1535

B. 1536

C. 1537.5

D. 1540

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Correct Answer: Option C

Explanation:
Sum10=15300. Sum6=9150. Remaining=6150. Average=1537.5.

This question belongs to: Maths Average

Question #3

Average of 8 numbers 1950. If average of 5 is 1945, average of remaining 3?

A. 1958.33

B. 1955

C. 1960

D. 1957

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Correct Answer: Option A

Explanation:
Sum8=15600. Sum5=9725. Remaining=5875. Average≈1958.33.

This question belongs to: Maths Average

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