Average of 12 numbers 320. If average of 8 is 315, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 320. If average of 8 is 315, average of remaining 4?

A. 332

B. 325

C. 328

D. 330

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum12=3840. Sum8=2520. Remaining=1320. Average=330.

This question belongs to: Maths Average

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Question #1

Average of 15,30,45,60 is

A. 38

B. 35

C. 37.5

D. 40

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Correct Answer: Option C

Explanation:
Sum=150. Average=37.5.

This question belongs to: Maths Average

Question #2

Average of 15 numbers 2760. If average of 9 is 2755, average of remaining 6?

A. 2770

B. 2768

C. 2765

D. 2767.5

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Correct Answer: Option D

Explanation:
Sum15=41400. Sum9=24795. Remaining=16605. Average=2767.5.

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Question #3

Average of 12 numbers 2320. If average of 8 is 2315, average of remaining 4?

A. 2330

B. 2332

C. 2325

D. 2328

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Correct Answer: Option A

Explanation:
Sum12=27840. Sum8=18520. Remaining=9320. Average=2330.

This question belongs to: Maths Average

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