Average of 9 numbers 390. If average of 6 is 385, average of remaining 3? MCQ with Answer and Explanation

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Average of 9 numbers 390. If average of 6 is 385, average of remaining 3?

A. 398

B. 395

C. 400

D. 405

Answer: Option C

Solution (By JKExamLibrary)

Sum9=3510. Sum6=2310. Remaining=1200. Average=400.

This question belongs to: Maths Average

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Practice More Average Questions

Question #1 Report Error

The average of 8 numbers is 26. If one number is 30, find the average of the remaining 7.

A. 25.43

B. 25.5

C. 24.86

D. 26

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Correct Answer: Option A

Explanation:
Sum=8×26=208. Remaining sum=208-30=178. Avg=178/7=25.43.

This question belongs to: Maths Average

Question #2 Report Error

Average of 9 numbers 2590. If average of 6 is 2585, average of remaining 3?

A. 2600

B. 2605

C. 2598

D. 2595

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Correct Answer: Option A

Explanation:
Sum9=23310. Sum6=15510. Remaining=7800. Average=2600.

This question belongs to: Maths Average

Question #3 Report Error

If average of 4 numbers is x and average of 6 other is y, average of all 10 is

A. (x + y)/2

B. x + y

C. (2x + 3y)/5

D. (4x + 6y)/10

View Answer & Solution Discuss

Correct Answer: Option D

Explanation:
Total = 4x + 6y. Average = (4x + 6y)/10.

This question belongs to: Maths Average

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