Average of 12 numbers 2270. If average of 8 is 2265, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 2270. If average of 8 is 2265, average of remaining 4?

A. 2280

B. 2278

C. 2275

D. 2282

Answer: Option A

Solution (By JKSSB Mock Tests)

Sum12=27240. Sum8=18120. Remaining=9120. Average=2280.

This question belongs to: Maths Average

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Question #1

Average of 10 numbers 2030. If average of 6 is 2025, average of remaining 4?

A. 2035

B. 2036

C. 2040

D. 2037.5

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Correct Answer: Option D

Explanation:
Sum10=20300. Sum6=12150. Remaining=8150. Average=2037.5.

This question belongs to: Maths Average

Question #2

The average of 20,25,30,35,40 is

A. 32

B. 28

C. 31

D. 30

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Correct Answer: Option D

Explanation:
Sum=150. Average=30.

This question belongs to: Maths Average

Question #3

Average age of 8 persons is 35. If two persons aged 40 and 30 leave, new average?

A. 35

B. 37

C. 36

D. 34

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Correct Answer: Option A

Explanation:
Total=280. Leave 70. Remaining 210 for 6. 35.

This question belongs to: Maths Average

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