Average of 15 numbers 2110. If average of 9 is 2105, average of remaining 6? MCQ with Answer and Explanation

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Average of 15 numbers 2110. If average of 9 is 2105, average of remaining 6?

A. 2115

B. 2120

C. 2117.5

D. 2118

Answer: Option C

Solution (By JKExamLibrary)

Sum15=31650. Sum9=18945. Remaining=12705. Average=2117.5.

This question belongs to: Maths Average

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Question #1 Report Error

Average of five consecutive odd numbers is 25. What is the largest number?

A. 27

B. 33

C. 31

D. 29

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Correct Answer: Option D

Explanation:
Let numbers be x-4, x-2, x, x+2, x+4. Average = x = 25. Largest = 25 + 4 = 29.

This question belongs to: Maths Average

Question #2 Report Error

Average of 40 numbers is 36. If 4 numbers average 40 removed, new average of 36 numbers?

A. 34

B. 36

C. 35.56

D. 35

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Correct Answer: Option C

Explanation:
Sum40=1440. Sum4=160. Remaining=1280/36≈35.56.

This question belongs to: Maths Average

Question #3 Report Error

Average of all multiples of 10 from 10 to 100 is

A. 45

B. 50

C. 60

D. 55

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Correct Answer: Option D

Explanation:
10 numbers. Average=(10+100)/2=55.

This question belongs to: Maths Average

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