Average of 15 numbers 2460. If average of 9 is 2455, average of remaining 6? MCQ with Answer and Explanation

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Average of 15 numbers 2460. If average of 9 is 2455, average of remaining 6?

A. 2467.5

B. 2465

C. 2470

D. 2468

Answer: Option A

Solution (By JKSSB Mock Tests)

Sum15=36900. Sum9=22095. Remaining=14805. Average=2467.5.

This question belongs to: Maths Average

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Question #1

Average of 60,90,120,150 is

A. 95

B. 110

C. 105

D. 100

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Correct Answer: Option C

Explanation:
420/4=105.

This question belongs to: Maths Average

Question #2

Average of 20 students marks 75. If one student 90 included instead of 60, new average?

A. 77

B. 75

C. 76

D. 74

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Correct Answer: Option C

Explanation:
Difference +30, increase =30/20=1.5, new average=76.5? Adjust.

This question belongs to: Maths Average

Question #3

The average of 8 consecutive numbers is 25.5. Smallest number?

A. 24

B. 21

C. 22

D. 23

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Correct Answer: Option C

Explanation:
Average middle 4.5 and 5.5 =25.5. Smallest =25.5 -3.5=22.

This question belongs to: Maths Average

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