The average of 4 numbers is 15. If one number is 0, what is the average of the other three? MCQ with Answer and Explanation

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The average of 4 numbers is 15. If one number is 0, what is the average of the other three?

A. 15

B. 20

C. 18

D. 22.5

Answer: Option B

Solution (By JKSSB Mock Tests)

Sum=4×15=60. Other sum=60-0=60. Avg=60/3=20.

This question belongs to: Maths Average

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Question #1

Average of 8 numbers 1900. If average of 5 is 1895, average of remaining 3?

A. 1905

B. 1910

C. 1908.33

D. 1907

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Correct Answer: Option C

Explanation:
Sum8=15200. Sum5=9475. Remaining=5725. Average≈1908.33.

This question belongs to: Maths Average

Question #2

The average of 6 numbers is 30. If each number is multiplied by 1.5, what is the new average?

A. 60

B. 45

C. 30

D. 22.5

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Correct Answer: Option B

Explanation:
New average =30×1.5=45.

This question belongs to: Maths Average

Question #3

Average of 795,1060,1325 is

A. 1070

B. 1050

C. 1055

D. 1060

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Correct Answer: Option D

Explanation:
3180/3=1060.

This question belongs to: Maths Average

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