Average of 10 numbers 780. If average of 6 is 775, average of remaining 4? MCQ with Answer and Explanation

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Average of 10 numbers 780. If average of 6 is 775, average of remaining 4?

A. 786

B. 785

C. 790

D. 787.5

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum10=7800. Sum6=4650. Remaining=3150. Average=787.5.

This question belongs to: Maths Average

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Practice More Average Questions

Question #1

The average of 3 numbers is 15. If each number is multiplied by 2, what is the new average?

A. 15

B. 30

C. 60

D. 45

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Correct Answer: Option B

Explanation:
New average =15×2=30.

This question belongs to: Maths Average

Question #2

Average of 16 numbers 35. If average of 12 is 32, average of remaining 4?

A. 40

B. 42

C. 44

D. 45

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Correct Answer: Option C

Explanation:
Sum16=560. Sum12=384. Remaining=176. Average=44.

This question belongs to: Maths Average

Question #3

What is the average of all numbers from 1 to 50 that are divisible by 7?

A. 29

B. 28.5

C. 27.5

D. 28

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Correct Answer: Option D

Explanation:
Numbers: 7,14,21,28,35,42,49. Sum=196, count=7, avg=28.

This question belongs to: Maths Average

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