Average of 12 numbers 1620. If average of 8 is 1615, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 1620. If average of 8 is 1615, average of remaining 4?

A. 1625

B. 1628

C. 1630

D. 1632

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum12=19440. Sum8=12920. Remaining=6520. Average=1630.

This question belongs to: Maths Average

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Question #1

The average of 4 numbers is 28. If one number is 32, find the average of the remaining 3.

A. 26

B. 26.67

C. 28

D. 27

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Correct Answer: Option B

Explanation:
Sum=4×28=112. Remaining sum=112-32=80. Avg=80/3=26.67.

This question belongs to: Maths Average

Question #2

The average of 10,20,30,40,50 is

A. 30

B. 35

C. 32

D. 28

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Correct Answer: Option A

Explanation:
Sum=150. Average=30.

This question belongs to: Maths Average

Question #3

Average of 8 numbers 1550. If average of 5 is 1545, average of remaining 3?

A. 1560

B. 1558.33

C. 1557

D. 1555

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Correct Answer: Option B

Explanation:
Sum8=12400. Sum5=7725. Remaining=4675. Average≈1558.33.

This question belongs to: Maths Average

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