Average of 15 numbers 2160. If average of 9 is 2155, average of remaining 6? MCQ with Answer and Explanation

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Average of 15 numbers 2160. If average of 9 is 2155, average of remaining 6?

A. 2165

B. 2170

C. 2167.5

D. 2168

Answer: Option C

Solution (By JKExamLibrary)

Sum15=32400. Sum9=19395. Remaining=13005. Average=2167.5.

This question belongs to: Maths Average

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Question #1 Report Error

The average of 1620,2160,2700 is

A. 2170

B. 2160

C. 2150

D. 2155

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Correct Answer: Option B

Explanation:
6480/3=2160.

This question belongs to: Maths Average

Question #2 Report Error

Average of 15 numbers 460. If average of 9 is 455, average of remaining 6?

A. 468

B. 465

C. 467.5

D. 470

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Correct Answer: Option C

Explanation:
Sum15=6900. Sum9=4095. Remaining=2805. Average=467.5.

This question belongs to: Maths Average

Question #3 Report Error

The average of 6 numbers is 20. If one number is 10, find the average of the rest.

A. 20.5

B. 21

C. 22

D. 21.5

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Correct Answer: Option C

Explanation:
Sum=6×20=120. Rest sum=120-10=110. Avg=110/5=22.

This question belongs to: Maths Average

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