Average of 12 numbers 1470. If average of 8 is 1465, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 1470. If average of 8 is 1465, average of remaining 4?

A. 1478

B. 1475

C. 1482

D. 1480

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum12=17640. Sum8=11720. Remaining=5920. Average=1480.

This question belongs to: Maths Average

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Question #1

Average of 9 numbers 890. If average of 6 is 885, average of remaining 3?

A. 905

B. 898

C. 900

D. 895

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Correct Answer: Option C

Explanation:
Sum9=8010. Sum6=5310. Remaining=2700. Average=900.

This question belongs to: Maths Average

Question #2

Average of 1065,1420,1775 is

A. 1410

B. 1420

C. 1430

D. 1415

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Correct Answer: Option B

Explanation:
4260/3=1420.

This question belongs to: Maths Average

Question #3

Average of 10 observations 25. Later one 35 replaced by 15, new average?

A. 26

B. 25

C. 23

D. 24

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Correct Answer: Option D

Explanation:
Change -20, decrease 2, new 23? Wait 25-2=23.

This question belongs to: Maths Average

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