Average of 12 numbers 2470. If average of 8 is 2465, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 2470. If average of 8 is 2465, average of remaining 4?

A. 2480

B. 2478

C. 2475

D. 2482

Answer: Option A

Solution (By JKSSB Mock Tests)

Sum12=29640. Sum8=19720. Remaining=9920. Average=2480.

This question belongs to: Maths Average

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Question #1

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The average marks in English for 30 students 55. If 10 students average 65, average of remaining?

A. 48

B. 50

C. 52

D. 55

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Correct Answer: Option B

Explanation:
Total=1650. 10 students=650. Remaining=1000 for 20. 50.

This question belongs to: Maths Average

Question #2

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The average of 1080,1440,1800 is

A. 1435

B. 1450

C. 1430

D. 1440

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Correct Answer: Option D

Explanation:
4320/3=1440.

This question belongs to: Maths Average

Question #3

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The average of 9 numbers is 35. If average of first 4 is 32, average of last 6 is 37, the 4th number?

A. 35

B. 33

C. 36

D. 34

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Correct Answer: Option B

Explanation:
Sum9=315. Sum1-4=128. Sum4-9=222. 4th=128+222-315=35.

This question belongs to: Maths Average

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