The average weight of 25 students is 50 kg. If the weight of teacher is included, average increases by 1 kg. What is teacher's weight? MCQ with Answer and Explanation

The average weight of 25 students is 50 kg. If the weight of teacher is included, average increases by 1 kg. What is teacher's weight?

A. 80

B. 75

C. 76

D. 74

Answer: Option C

Total students weight=1250. New total for 26=26×51=1326. Teacher=1326-1250=76 kg.

This question belongs to: Maths Average

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Question #1 Report Error

Average of 9 numbers 1890. If average of 6 is 1885, average of remaining 3?

A. 1898

B. 1900

C. 1895

D. 1905

Correct Answer: Option B

Explanation:
Sum9=17010. Sum6=11310. Remaining=5700. Average=1900.

This question belongs to: Maths Average

Question #2 Report Error

Average of 1425,1900,2375 is

A. 1895

B. 1910

C. 1890

D. 1900

Correct Answer: Option D

Explanation:
5700/3=1900.

This question belongs to: Maths Average

Question #3 Report Error

Average of 15 numbers 960. If average of 9 is 955, average of remaining 6?

A. 967.5

B. 968

C. 970

D. 965

Correct Answer: Option A

Explanation:
Sum15=14400. Sum9=8595. Remaining=5805. Average=967.5.

This question belongs to: Maths Average