Average of 12 numbers 470. If average of 8 is 465, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 470. If average of 8 is 465, average of remaining 4?

A. 478

B. 482

C. 475

D. 480

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum12=5640. Sum8=3720. Remaining=1920. Average=480.

This question belongs to: Maths Average

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Question #1

Average of 405,540,675 is

A. 530

B. 540

C. 550

D. 535

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Correct Answer: Option B

Explanation:
1620/3=540.

This question belongs to: Maths Average

Question #2

Average of 12 numbers 45. If average of 9 is 42, average of remaining 3?

A. 50

B. 52

C. 54

D. 48

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Correct Answer: Option B

Explanation:
Sum12=540. Sum9=378. Remaining=162. Average=54.

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Question #3

Average of 12 numbers 1070. If average of 8 is 1065, average of remaining 4?

A. 1078

B. 1082

C. 1075

D. 1080

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Correct Answer: Option D

Explanation:
Sum12=12840. Sum8=8520. Remaining=4320. Average=1080.

This question belongs to: Maths Average

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