The average marks of 15 students is 80. If a student with 95 marks leaves, what is the new average? MCQ with Answer and Explanation

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The average marks of 15 students is 80. If a student with 95 marks leaves, what is the new average?

A. 78.5

B. 79

C. 79.5

D. 78.93

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum=15×80=1200. New sum=1200-95=1105. New avg=1105/14=78.93.

This question belongs to: Maths Average

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Question #1

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Average of 10 numbers 190. If average of 6 is 185, average of remaining 4?

A. 200

B. 195

C. 197.5

D. 196

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Correct Answer: Option C

Explanation:
Sum10=1900. Sum6=1110. Remaining=790. Average=197.5.

This question belongs to: Maths Average

Question #2

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The average of 32,48,64 is

A. 50

B. 45

C. 46

D. 48

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Correct Answer: Option D

Explanation:
144/3=48.

This question belongs to: Maths Average

Question #3

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Average income of 10 persons is Rs. 5000. If one leaves, average becomes Rs. 4800. Income of the person who left?

A. 6500

B. 7000

C. 6800

D. 7200

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Correct Answer: Option C

Explanation:
Sum10=50000. Sum9=43200. Left=6800.

This question belongs to: Maths Average

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