Average of 15 numbers 610. If average of 9 is 605, average of remaining 6? MCQ with Answer and Explanation

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Average of 15 numbers 610. If average of 9 is 605, average of remaining 6?

A. 618

B. 620

C. 615

D. 617.5

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum15=9150. Sum9=5445. Remaining=3705. Average=617.5.

This question belongs to: Maths Average

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Question #1

Average of first 12 natural numbers is

A. 6.5

B. 7

C. 6

D. 5.5

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Correct Answer: Option A

Explanation:
13/2=6.5.

This question belongs to: Maths Average

Question #2

The average of 10, 20, 30 is 20, average of 30,40,50 is 40, average of 10,20,30,40,50 is

A. 28

B. 32

C. 35

D. 30

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Correct Answer: Option D

Explanation:
Sum=150. Average=30.

This question belongs to: Maths Average

Question #3

Average of 25 numbers 40. If average of 15 is 35, average of remaining 10?

A. 47.5

B. 48

C. 45

D. 46

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Correct Answer: Option A

Explanation:
Sum25=1000. Sum15=525. Remaining=475. Average=47.5.

This question belongs to: Maths Average

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