Average of 25 numbers is 48. If one number 60 is replaced by 36, new average? MCQ with Answer and Explanation

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

A. 48

B. 47.04

C. 47

D. 46

Answer: Option B

Solution (By JKSSB Mock Tests)

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

This question belongs to: Maths Average

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Question #1

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Average of 9 numbers is 28. If average of first 5 is 25, average of last 5 is 31, 5th number?

A. 27

B. 26

C. 29

D. 28

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Correct Answer: Option D

Explanation:
Sum9=252. Sum1-5=125. Sum5-9=155. 5th=125+155-252=28.

This question belongs to: Maths Average

Question #2

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The average age of 5 children is 12. If parents average 40, average of all 7?

A. 25

B. 18

C. 22

D. 20

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Correct Answer: Option D

Explanation:
Children total=60. Parents=80. Total=140. Average=20.

This question belongs to: Maths Average

Question #3

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The average of 12,18,24,30 is

A. 20

B. 24

C. 22

D. 21

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Correct Answer: Option D

Explanation:
Sum=84. Average=21.

This question belongs to: Maths Average

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