The average of 420,560,700 is MCQ with Answer and Explanation

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The average of 420,560,700 is

A. 560

B. 570

C. 555

D. 550

Answer: Option A

Solution (By JKSSB Mock Tests)

1680/3=560.

This question belongs to: Maths Average

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Question #1

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Average of 25 numbers 40. If average of 15 is 35, average of remaining 10?

A. 46

B. 45

C. 48

D. 47.5

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Correct Answer: Option D

Explanation:
Sum25=1000. Sum15=525. Remaining=475. Average=47.5.

This question belongs to: Maths Average

Question #2

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The average of 10 numbers is increased by 2 when one number 15 is replaced by another. What is the new number?

A. 30

B. 40

C. 25

D. 35

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Correct Answer: Option D

Explanation:
Increase in sum =10×2=20. New number =15+20=35.

This question belongs to: Maths Average

Question #3

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Average of 9 numbers is 50. If 60 is replaced by 40, new average?

A. 50

B. 49

C. 47

D. 48

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Correct Answer: Option D

Explanation:
Change -20, decrease 20/9≈2.22, 50-2.22≈47.78 approx 48.

This question belongs to: Maths Average

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