Average of 15 numbers 910. If average of 9 is 905, average of remaining 6? MCQ with Answer and Explanation

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Average of 15 numbers 910. If average of 9 is 905, average of remaining 6?

A. 920

B. 917.5

C. 918

D. 915

Answer: Option B

Solution (By JKSSB Mock Tests)

Sum15=13650. Sum9=8145. Remaining=5505. Average=917.5.

This question belongs to: Maths Average

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Question #1

The average of 44,55,66 is

A. 58

B. 50

C. 55

D. 60

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Correct Answer: Option C

Explanation:
165/3=55.

This question belongs to: Maths Average

Question #2

If the average of 8 numbers is 22 and average of 4 is 20, average of other 4 is

A. 24

B. 23

C. 26

D. 22

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Correct Answer: Option A

Explanation:
Sum8=176. Sum4=80. Other sum=96. Average=24.

This question belongs to: Maths Average

Question #3

Average of 25 numbers 80. If average of 10 is 85, average of remaining 15?

A. 75

B. 78

C. 76.67

D. 77

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Correct Answer: Option C

Explanation:
Total=2000. Sum10=850. Remaining=1150/15≈76.67.

This question belongs to: Maths Average

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