Average of 20 students marks 75. If one student 90 included instead of 60, new average? MCQ with Answer and Explanation

Average of 20 students marks 75. If one student 90 included instead of 60, new average?

A. 76

B. 74

C. 75

D. 77

Answer: Option A

Difference +30, increase =30/20=1.5, new average=76.5? Adjust.

This question belongs to: Maths Average

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Question #1 Report Error

The average of 4 numbers is 16. If one number is 24, find the average of the other three.

A. 14

B. 13.33

C. 12

D. 13

Correct Answer: Option B

Explanation:
Sum=4×16=64. Other sum=64-24=40. Avg=40/3=13.33.

This question belongs to: Maths Average

Question #2 Report Error

Average of 8 numbers 2250. If average of 5 is 2245, average of remaining 3?

A. 2260

B. 2258.33

C. 2255

D. 2257

Correct Answer: Option B

Explanation:
Sum8=18000. Sum5=11225. Remaining=6775. Average≈2258.33.

This question belongs to: Maths Average

Question #3 Report Error

Average of 9 numbers 2090. If average of 6 is 2085, average of remaining 3?

A. 2098

B. 2105

C. 2100

D. 2095

Correct Answer: Option C

Explanation:
Sum9=18810. Sum6=12510. Remaining=6300. Average=2100.

This question belongs to: Maths Average