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. 70.55

B. 70

C. 71

D. 71.5

Answer: Option A

Solution (By JKSSB Mock Tests)

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

The average of 50,55,60,65 is

A. 60

B. 55

C. 57.5

D. 58

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Correct Answer: Option C

Explanation:
230/4=57.5.

This question belongs to: Maths Average

Question #2

The average of 8 numbers is 27. If each number is decreased by 4, what is the new average?

A. 23

B. 27

C. 31

D. 19

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Correct Answer: Option A

Explanation:
New average =27-4=23.

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Question #3

Average of 8 numbers 2050. If average of 5 is 2045, average of remaining 3?

A. 2060

B. 2055

C. 2057

D. 2058.33

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Correct Answer: Option D

Explanation:
Sum8=16400. Sum5=10225. Remaining=6175. Average≈2058.33.

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