The average marks of 12 students is 72. If a student with 88 marks leaves, what is the new average? MCQ with Answer and Explanation

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The average marks of 12 students is 72. If a student with 88 marks leaves, what is the new average?

A. 71

B. 70.55

C. 71.5

D. 70

Answer: Option B

Solution (By JKExamLibrary)

Sum=12×72=864. New sum=864-88=776. New avg=776/11=70.545≈70.55.

This question belongs to: Maths Average

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Question #1 Report Error

Average of 10 numbers 15. If each multiplied by 3, new average?

A. 45

B. 30

C. 15

D. 5

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Correct Answer: Option A

Explanation:
Multiplied by 3, average 45.

This question belongs to: Maths Average

Question #2 Report Error

Average of 8 numbers 2100. If average of 5 is 2095, average of remaining 3?

A. 2108.33

B. 2105

C. 2107

D. 2110

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Correct Answer: Option A

Explanation:
Sum8=16800. Sum5=10475. Remaining=6325. Average≈2108.33.

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Question #3 Report Error

Average of 9 numbers 2390. If average of 6 is 2385, average of remaining 3?

A. 2398

B. 2400

C. 2395

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Correct Answer: Option B

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