The average of 35 numbers is 25. If 5 numbers average 30 are included, new average of 40? MCQ with Answer and Explanation

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The average of 35 numbers is 25. If 5 numbers average 30 are included, new average of 40?

A. 24

B. 25

C. 25.625

D. 26

Answer: Option C

Solution (By JKSSB Mock Tests)

Total35=875. Added=150. Total1025/40=25.625.

This question belongs to: Maths Average

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Question #1

Average of 10 numbers 1880. If average of 6 is 1875, average of remaining 4?

A. 1885

B. 1886

C. 1890

D. 1887.5

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Correct Answer: Option D

Explanation:
Sum10=18800. Sum6=11250. Remaining=7550. Average=1887.5.

This question belongs to: Maths Average

Question #2

Average of 5 consecutive odd numbers is 27. Largest?

A. 35

B. 31

C. 29

D. 33

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Correct Answer: Option B

Explanation:
Largest=27+4=31.

This question belongs to: Maths Average

Question #3

What is the average of the first 9 odd numbers?

A. 9.5

B. 9

C. 10

D. 8.5

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Correct Answer: Option B

Explanation:
Sum of first n odd numbers = n^2 =9^2=81. Average=81/9=9.

This question belongs to: Maths Average

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