Average of 15 numbers 2510. If average of 9 is 2505, average of remaining 6? MCQ with Answer and Explanation

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Average of 15 numbers 2510. If average of 9 is 2505, average of remaining 6?

A. 2517.5

B. 2515

C. 2520

D. 2518

Answer: Option A

Solution (By JKExamLibrary)

Sum15=37650. Sum9=22545. Remaining=15105. Average=2517.5.

This question belongs to: Maths Average

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Question #1

Average of 25 numbers is 48. If one number 60 is replaced by 36, new average?

A. 48

B. 46

C. 47

D. 47.04

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Correct Answer: Option D

Explanation:
Change -24, decrease 24/25=0.96, new 47.04.

This question belongs to: Maths Average

Question #2

The average of 80,90,100 is

A. 95

B. 85

C. 88

D. 90

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Correct Answer: Option D

Explanation:
270/3=90.

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Question #3

The average of 12,18,24,30,36 is

A. 23

B. 25

C. 24

D. 26

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Correct Answer: Option C

Explanation:
Sum=120. Average=24.

This question belongs to: Maths Average

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