Average of 15 numbers 38. If one number 50 replaced by 20, new average? MCQ with Answer and Explanation

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Average of 15 numbers 38. If one number 50 replaced by 20, new average?

A. 36.67

B. 35

C. 36

D. 37

Answer: Option A

Solution (By JKSSB Mock Tests)

Change -30, decrease 2. New≈36.

This question belongs to: Maths Average

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Question #1

The average of 690,920,1150 is

A. 920

B. 915

C. 930

D. 910

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Correct Answer: Option A

Explanation:
2760/3=920.

This question belongs to: Maths Average

Question #2

Average of 15 numbers 1310. If average of 9 is 1305, average of remaining 6?

A. 1317.5

B. 1315

C. 1320

D. 1318

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Correct Answer: Option A

Explanation:
Sum15=19650. Sum9=11745. Remaining=7905. Average=1317.5.

This question belongs to: Maths Average

Question #3

If average of 7 numbers is 24 and average of 4 is 22, average of remaining 3?

A. 27

B. 26

C. 28

D. 25

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Correct Answer: Option A

Explanation:
Sum7=168. Sum4=88. Remaining=80. Average≈26.67 approx 27.

This question belongs to: Maths Average

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