Average of 25,35,45,55,65 is MCQ with Answer and Explanation

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Average of 25,35,45,55,65 is

A. 42

B. 40

C. 50

D. 45

Answer: Option D

Solution (By JKSSB Mock Tests)

225/5=45.

This question belongs to: Maths Average

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Question #1

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The average of 11 numbers is 55. What is the sum of the numbers?

A. 550

B. 605

C. 615

D. 600

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Correct Answer: Option B

Explanation:
Sum = Average × Number =55×11=605.

This question belongs to: Maths Average

Question #2

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The average of 8 numbers is 50. If one number 70 is replaced by 54, what is the new average?

A. 52

B. 48

C. 49

D. 50

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Correct Answer: Option B

Explanation:
Original total = 8×50 = 400. New total = 400−70+54 = 384. New average = 384/8 = 48.

This question belongs to: Maths Average

Question #3

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Average of 12 numbers 1820. If average of 8 is 1815, average of remaining 4?

A. 1825

B. 1828

C. 1832

D. 1830

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Correct Answer: Option D

Explanation:
Sum12=21840. Sum8=14520. Remaining=7320. Average=1830.

This question belongs to: Maths Average

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