Average of 12 numbers 1370. If average of 8 is 1365, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 1370. If average of 8 is 1365, average of remaining 4?

A. 1382

B. 1375

C. 1380

D. 1378

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum12=16440. Sum8=10920. Remaining=5520. Average=1380.

This question belongs to: Maths Average

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Question #1

Average of 9 numbers 2540. If average of 6 is 2535, average of remaining 3?

A. 2550

B. 2548

C. 2545

D. 2555

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Correct Answer: Option A

Explanation:
Sum9=22860. Sum6=15210. Remaining=7650. Average=2550.

This question belongs to: Maths Average

Question #2

Average of 8 numbers 600. If average of 5 is 595, average of remaining 3?

A. 605

B. 607

C. 608.33

D. 610

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Correct Answer: Option C

Explanation:
Sum8=4800. Sum5=2975. Remaining=1825. Average≈608.33.

This question belongs to: Maths Average

Question #3

Average of 30 numbers 20. If each decreased by 4, new average?

A. 24

B. 18

C. 16

D. 20

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Correct Answer: Option C

Explanation:
16.

This question belongs to: Maths Average

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