Average of 15 numbers 610. If average of 9 is 605, average of remaining 6? MCQ with Answer and Explanation

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Average of 15 numbers 610. If average of 9 is 605, average of remaining 6?

A. 615

B. 618

C. 620

D. 617.5

Answer: Option D

Solution (By JKExamLibrary)

Sum15=9150. Sum9=5445. Remaining=3705. Average=617.5.

This question belongs to: Maths Average

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Practice More Average Questions

Question #1 Report Error

Average of 20 numbers is 45. If 5 numbers with average 50 are removed, new average?

A. 45

B. 44

C. 42

D. 43.33

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Correct Answer: Option D

Explanation:
Sum20=900. Sum5=250. Remaining sum=650. Numbers15. Average≈43.33.

This question belongs to: Maths Average

Question #2 Report Error

The average of 4 numbers is 24. If each number is multiplied by 4, what is the new average?

A. 96

B. 72

C. 24

D. 48

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Correct Answer: Option A

Explanation:
New average =24×4=96.

This question belongs to: Maths Average

Question #3 Report Error

If the average of a,b,c,d is 30 and average of a,b is 25, average of c,d is

A. 28

B. 35

C. 32

D. 30

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Correct Answer: Option B

Explanation:
a+b+c+d =120. a+b=50. c+d=70. Average c,d =35.

This question belongs to: Maths Average

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