Average of 9 numbers 2090. If average of 6 is 2085, average of remaining 3? MCQ with Answer and Explanation

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Average of 9 numbers 2090. If average of 6 is 2085, average of remaining 3?

A. 2105

B. 2098

C. 2100

D. 2095

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum9=18810. Sum6=12510. Remaining=6300. Average=2100.

This question belongs to: Maths Average

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Question #1

Average of 9 numbers 2340. If average of 6 is 2335, average of remaining 3?

A. 2350

B. 2348

C. 2355

D. 2345

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Correct Answer: Option A

Explanation:
Sum9=21060. Sum6=14010. Remaining=7050. Average=2350.

This question belongs to: Maths Average

Question #2

If average of a and b is 10, b and c is 15, c and a is 20, average of a,b,c is

A. 16

B. 14

C. 13

D. 15

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Correct Answer: Option D

Explanation:
Adding all: 2(a+b+c)=90, a+b+c=45. Average=15.

This question belongs to: Maths Average

Question #3

The average of 6 numbers is 15. If average of first 4 is 12, average of last 3 is 18, the 4th number is

A. 16

B. 18

C. 12

D. 15

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Correct Answer: Option D

Explanation:
Sum6=90. Sum1-4=48. Sum4-6=54. 4th=48+54-90=12? Adjust.

This question belongs to: Maths Average

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