Average of 345,460,575 is MCQ with Answer and Explanation

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Average of 345,460,575 is

A. 455

B. 460

C. 450

D. 470

Answer: Option B

Solution (By JKSSB Mock Tests)

1380/3=460.

This question belongs to: Maths Average

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Question #1

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The average of 15 observations is 20. If each observation is increased by 3, what is the new average?

A. 17

B. 20

C. 30

D. 23

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Correct Answer: Option D

Explanation:
New average = old average + increase =20+3=23.

This question belongs to: Maths Average

Question #2

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The average of 3 numbers is 26. If the numbers are in the ratio 1:3:5, find the middle number.

A. 28

B. 24

C. 26

D. 22

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Correct Answer: Option C

Explanation:
Sum=3×26=78. Ratio sum=1+3+5=9. Middle = (3/9)×78=26.

This question belongs to: Maths Average

Question #3

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The average of 9 numbers is 50. If one number is 70, find the average of the remaining 8.

A. 47

B. 46.5

C. 48

D. 47.5

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Correct Answer: Option D

Explanation:
Sum=9×50=450. Remaining sum=450-70=380. Avg=380/8=47.5.

This question belongs to: Maths Average

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