Average of 15 numbers 2210. If average of 9 is 2205, average of remaining 6? MCQ with Answer and Explanation

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Average of 15 numbers 2210. If average of 9 is 2205, average of remaining 6?

A. 2218

B. 2220

C. 2217.5

D. 2215

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum15=33150. Sum9=19845. Remaining=13305. Average=2217.5.

This question belongs to: Maths Average

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Question #1

Average of 18 numbers 60. If 6 numbers average 70, average of remaining 12?

A. 56

B. 58

C. 55

D. 50

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Correct Answer: Option C

Explanation:
Total=1080. 6=420. Remaining=660/12=55.

This question belongs to: Maths Average

Question #2

The average of squares of first 4 natural numbers is

A. 8.5

B. 9

C. 6.5

D. 7.5

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Correct Answer: Option D

Explanation:
(1+4+9+16)/4=30/4=7.5.

This question belongs to: Maths Average

Question #3

Average of 15 numbers 2110. If average of 9 is 2105, average of remaining 6?

A. 2117.5

B. 2120

C. 2115

D. 2118

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Correct Answer: Option A

Explanation:
Sum15=31650. Sum9=18945. Remaining=12705. Average=2117.5.

This question belongs to: Maths Average

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