Average of 12 numbers 620. If average of 8 is 615, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 620. If average of 8 is 615, average of remaining 4?

A. 632

B. 625

C. 630

D. 628

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum12=7440. Sum8=4920. Remaining=2520. Average=630.

This question belongs to: Maths Average

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Question #1

The average of 1170,1560,1950 is

A. 1555

B. 1570

C. 1560

D. 1550

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Correct Answer: Option C

Explanation:
4680/3=1560.

This question belongs to: Maths Average

Question #2

Average of 10 numbers 1630. If average of 6 is 1625, average of remaining 4?

A. 1635

B. 1640

C. 1637.5

D. 1636

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Correct Answer: Option C

Explanation:
Sum10=16300. Sum6=9750. Remaining=6550. Average=1637.5.

This question belongs to: Maths Average

Question #3

The average of 6 numbers is 29. If one number is 34, find the average of the remaining 5.

A. 27.6

B. 27.8

C. 28

D. 28.2

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Correct Answer: Option C

Explanation:
Sum=6×29=174. Remaining sum=174-34=140. Avg=140/5=28.

This question belongs to: Maths Average

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