The average of 300,400,500 is MCQ with Answer and Explanation

The average of 300,400,500 is

A. 390

B. 395

C. 410

D. 400

Answer: Option D

1200/3=400.

This question belongs to: Maths Average

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Question #1 Report Error

Average of 50 numbers 40. If two numbers 30 and 50 are replaced by 40 and 60, new average?

A. 39

B. 40.4

C. 41

D. 40

Correct Answer: Option B

Explanation:
Net change +20, increase 20/50=0.4, new 40.4.

This question belongs to: Maths Average

Question #2 Report Error

The average of 7 numbers is 28. If one number is 40, find the average of the remaining 6.

A. 25

B. 24

C. 26

D. 27

Correct Answer: Option C

Explanation:
Sum=7×28=196. Remaining sum=196-40=156. Average=156/6=26.

This question belongs to: Maths Average

Question #3 Report Error

Average of 12 numbers 2770. If average of 8 is 2765, average of remaining 4?

A. 2778

B. 2780

C. 2782

D. 2775

Correct Answer: Option B

Explanation:
Sum12=33240. Sum8=22120. Remaining=11120. Average=2780.

This question belongs to: Maths Average