Average of 12 numbers 270. If average of 8 is 265, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 270. If average of 8 is 265, average of remaining 4?

A. 278

B. 275

C. 282

D. 280

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum12=3240. Sum8=2120. Remaining=1120. Average=280.

This question belongs to: Maths Average

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Question #1

Average of 10 numbers 130. If average of 6 is 125, average of remaining 4?

A. 137.5

B. 140

C. 135

D. 138

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Correct Answer: Option A

Explanation:
Sum10=1300. Sum6=750. Remaining=550. Average=137.5.

This question belongs to: Maths Average

Question #2

Average of 10 numbers 55. If average of 6 is 50, average of remaining 4?

A. 63

B. 60

C. 62.5

D. 65

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Correct Answer: Option C

Explanation:
Sum10=550. Sum6=300. Remaining=250. Average=62.5.

This question belongs to: Maths Average

Question #3

The average of 630,840,1050 is

A. 835

B. 850

C. 840

D. 830

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Correct Answer: Option C

Explanation:
2520/3=840.

This question belongs to: Maths Average

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