Average of 8 numbers 1550. If average of 5 is 1545, average of remaining 3? MCQ with Answer and Explanation

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

A. 1558.33

B. 1560

C. 1557

D. 1555

Answer: Option A

Solution (By JKSSB Mock Tests)

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

This question belongs to: Maths Average

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Question #1

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The average of 8 numbers is 12. If 4 is added to half of them and 4 subtracted from other half, new average?

A. 13

B. 12

C. 14

D. 11

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Correct Answer: Option B

Explanation:
Net change zero. Average remains 12.

This question belongs to: Maths Average

Question #2

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Average of 12 numbers 820. If average of 8 is 815, average of remaining 4?

A. 832

B. 825

C. 830

D. 828

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Correct Answer: Option C

Explanation:
Sum12=9840. Sum8=6520. Remaining=3320. Average=830.

This question belongs to: Maths Average

Question #3

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The average of 300,400,500 is

A. 395

B. 400

C. 410

D. 390

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Correct Answer: Option B

Explanation:
1200/3=400.

This question belongs to: Maths Average

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