Average of 15 numbers 2010. If average of 9 is 2005, average of remaining 6? MCQ with Answer and Explanation

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Average of 15 numbers 2010. If average of 9 is 2005, average of remaining 6?

A. 2018

B. 2015

C. 2017.5

D. 2020

Answer: Option C

Solution (By JKExamLibrary)

Sum15=30150. Sum9=18045. Remaining=12105. Average=2017.5.

This question belongs to: Maths Average

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Practice More Average Questions

Question #1

The average of 32,48,64 is

A. 46

B. 48

C. 45

D. 50

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Correct Answer: Option B

Explanation:
144/3=48.

This question belongs to: Maths Average

Question #2

The average marks of 20 students is 75. If a student with 90 marks leaves, what is the new average?

A. 73.5

B. 74.0

C. 75.0

D. 74.21

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Correct Answer: Option D

Explanation:
Sum=20×75=1500. New sum=1500-90=1410. New average=1410/19=74.21.

This question belongs to: Maths Average

Question #3

The average of 6 numbers is 21. If one number is 15, find the average of the remaining 5.

A. 21.4

B. 22

C. 21.6

D. 22.2

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Correct Answer: Option D

Explanation:
Sum=6×21=126. Remaining sum=126-15=111. Avg=111/5=22.2.

This question belongs to: Maths Average

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