The average marks of 25 students is 72. If a student with 60 marks leaves, what is the new average? MCQ with Answer and Explanation

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The average marks of 25 students is 72. If a student with 60 marks leaves, what is the new average?

A. 73

B. 72.5

C. 71.5

D. 72

Answer: Option B

Solution (By JKSSB Mock Tests)

Sum=25×72=1800. New sum=1800-60=1740. New avg=1740/24=72.5.

This question belongs to: Maths Average

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Question #1

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Average of 8 numbers 1300. If average of 5 is 1295, average of remaining 3?

A. 1308.33

B. 1307

C. 1305

D. 1310

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Correct Answer: Option A

Explanation:
Sum8=10400. Sum5=6475. Remaining=3925. Average≈1308.33.

This question belongs to: Maths Average

Question #2

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The average of 8 consecutive numbers is 25.5. Smallest number?

A. 24

B. 21

C. 23

D. 22

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Correct Answer: Option D

Explanation:
Average middle 4.5 and 5.5 =25.5. Smallest =25.5 -3.5=22.

This question belongs to: Maths Average

Question #3

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A shopkeeper sold 12 pens at Rs. 15 each. Average selling price of all pens if he sold 8 more at Rs. 12 each?

A. 13.8

B. 13.5

C. 13

D. 14

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Correct Answer: Option A

Explanation:
Total revenue = 12×15 + 8×12 = 180 + 96 = 276. Total pens=20. Average=276/20=13.8.

This question belongs to: Maths Average

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