Average of 15 numbers 2710. If average of 9 is 2705, average of remaining 6? MCQ with Answer and Explanation

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Average of 15 numbers 2710. If average of 9 is 2705, average of remaining 6?

A. 2718

B. 2720

C. 2717.5

D. 2715

Answer: Option C

Solution (By JKExamLibrary)

Sum15=40650. Sum9=24345. Remaining=16305. Average=2717.5.

This question belongs to: Maths Average

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Practice More Average Questions

Question #1

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

A. 35

B. 28

C. 30

D. 32

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Correct Answer: Option A

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

This question belongs to: Maths Average

Question #2

Average of 8 numbers 400. If average of 5 is 395, average of remaining 3?

A. 410

B. 407

C. 405

D. 408.33

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Correct Answer: Option D

Explanation:
Sum8=3200. Sum5=1975. Remaining=1225. Average≈408.33.

This question belongs to: Maths Average

Question #3

The average of 4 numbers is 25. If each number is multiplied by 3, what is the new average?

A. 100

B. 75

C. 50

D. 25

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Correct Answer: Option B

Explanation:
If each number is multiplied by a constant, the average also gets multiplied by that constant. New average = 25×3=75.

This question belongs to: Maths Average

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