Average of 8 numbers 500. If average of 5 is 495, average of remaining 3? MCQ with Answer and Explanation

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Average of 8 numbers 500. If average of 5 is 495, average of remaining 3?

A. 510

B. 508.33

C. 505

D. 507

Answer: Option B

Solution (By JKSSB Mock Tests)

Sum8=4000. Sum5=2475. Remaining=1525. Average≈508.33.

This question belongs to: Maths Average

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Question #1

The average of 6 numbers is 12. If one number is 20, find the average of the rest.

A. 10.4

B. 9.6

C. 11

D. 10

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Correct Answer: Option A

Explanation:
Sum=6×12=72. Rest sum=72-20=52. Average=52/5=10.4.

This question belongs to: Maths Average

Question #2

Average weight of 20 girls 45 kg. If 5 boys average 55 kg included, new average for 25?

A. 46

B. 50

C. 47

D. 48

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Correct Answer: Option C

Explanation:
Girls 900. Boys 275. Total 1175/25=47.

This question belongs to: Maths Average

Question #3

The average of 6 numbers is 24. If each number is increased by 6, what is the new average?

A. 18

B. 24

C. 30

D. 36

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Correct Answer: Option C

Explanation:
New average =24+6=30.

This question belongs to: Maths Average

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