Average of 12 numbers 770. If average of 8 is 765, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 770. If average of 8 is 765, average of remaining 4?

A. 778

B. 775

C. 782

D. 780

Answer: Option D

Solution (By JKExamLibrary)

Sum12=9240. Sum8=6120. Remaining=3120. Average=780.

This question belongs to: Maths Average

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Question #1

Average of 8 numbers 32. If average of 3 is 28, average of remaining 5?

A. 34.4

B. 33

C. 36

D. 35

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Correct Answer: Option A

Explanation:
Sum8=256. Sum3=84. Remaining=172. Average=34.4.

This question belongs to: Maths Average

Question #2

Average of 12 numbers 1170. If average of 8 is 1165, average of remaining 4?

A. 1182

B. 1178

C. 1180

D. 1175

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Correct Answer: Option C

Explanation:
Sum12=14040. Sum8=9320. Remaining=4720. Average=1180.

This question belongs to: Maths Average

Question #3

Average of 15 numbers 2660. If average of 9 is 2655, average of remaining 6?

A. 2670

B. 2665

C. 2668

D. 2667.5

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Correct Answer: Option D

Explanation:
Sum15=39900. Sum9=23895. Remaining=16005. Average=2667.5.

This question belongs to: Maths Average

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