The average weight of 10 students is 45 kg. If a new student joins, the average becomes 46 kg. What is the weight of the new student? MCQ with Answer and Explanation

The average weight of 10 students is 45 kg. If a new student joins, the average becomes 46 kg. What is the weight of the new student?

A. 57 kg

B. 55 kg

C. 54 kg

D. 56 kg

Answer: Option D

Total weight of 10 = 450. Total of 11 = 11×46=506. New student's weight = 506-450=56.

This question belongs to: Maths Average

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Question #1 Report Error

The average of 6 numbers is 21. If one number is 15, find the average of the remaining 5.

A. 21.4

B. 22.2

C. 22

D. 21.6

Correct Answer: Option B

Explanation:
Sum=6×21=126. Remaining sum=126-15=111. Avg=111/5=22.2.

This question belongs to: Maths Average

Question #2 Report Error

Average of 735,980,1225 is

A. 980

B. 975

C. 970

D. 990

Correct Answer: Option A

Explanation:
2940/3=980.

This question belongs to: Maths Average

Question #3 Report Error

Average of 10 numbers 2680. If average of 6 is 2675, average of remaining 4?

A. 2685

B. 2686

C. 2690

D. 2687.5

Correct Answer: Option D

Explanation:
Sum10=26800. Sum6=16050. Remaining=10750. Average=2687.5.

This question belongs to: Maths Average