Average of 12 numbers 2720. If average of 8 is 2715, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 2720. If average of 8 is 2715, average of remaining 4?

A. 2730

B. 2732

C. 2725

D. 2728

Answer: Option A

Solution (By JKSSB Mock Tests)

Sum12=32640. Sum8=21720. Remaining=10920. Average=2730.

This question belongs to: Maths Average

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Question #1

Average of 25 numbers 85. If average of 15 is 90, average of remaining 10?

A. 80

B. 75

C. 77.5

D. 78

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Correct Answer: Option C

Explanation:
Total=2125. Sum15=1350. Remaining=775/10=77.5.

This question belongs to: Maths Average

Question #2

The average of 1380,1840,2300 is

A. 1850

B. 1830

C. 1835

D. 1840

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Correct Answer: Option D

Explanation:
5520/3=1840.

This question belongs to: Maths Average

Question #3

A cricketer has average 30 after 10 innings. How many runs to score in 11th to make average 32?

A. 55

B. 48

C. 50

D. 52

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Correct Answer: Option D

Explanation:
Total after 11 =11×32=352. Runs in 10=300. Required=52.

This question belongs to: Maths Average

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