Average of 15 numbers 1560. If average of 9 is 1555, average of remaining 6? MCQ with Answer and Explanation

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Average of 15 numbers 1560. If average of 9 is 1555, average of remaining 6?

A. 1570

B. 1567.5

C. 1568

D. 1565

Answer: Option B

Solution (By JKExamLibrary)

Sum15=23400. Sum9=13995. Remaining=9405. Average=1567.5.

This question belongs to: Maths Average

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Question #1

Average of 9 numbers is 50. If 60 is replaced by 40, new average?

A. 50

B. 47

C. 49

D. 48

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Correct Answer: Option D

Explanation:
Change -20, decrease 20/9≈2.22, 50-2.22≈47.78 approx 48.

This question belongs to: Maths Average

Question #2

Average of 825,1100,1375 is

A. 1090

B. 1100

C. 1110

D. 1095

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Correct Answer: Option B

Explanation:
3300/3=1100.

This question belongs to: Maths Average

Question #3

Average of 9 numbers 2390. If average of 6 is 2385, average of remaining 3?

A. 2400

B. 2405

C. 2395

D. 2398

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Correct Answer: Option A

Explanation:
Sum9=21510. Sum6=14310. Remaining=7200. Average=2400.

This question belongs to: Maths Average

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