Average of 20 numbers 120. If average of 12 is 115, average of remaining 8? MCQ with Answer and Explanation

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Average of 20 numbers 120. If average of 12 is 115, average of remaining 8?

A. 127.5

B. 126

C. 130

D. 125

Answer: Option A

Solution (By JKExamLibrary)

Sum20=2400. Sum12=1380. Remaining=1020. Average=127.5.

This question belongs to: Maths Average

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Practice More Average Questions

Question #1 Report Error

Average of all odd numbers from 1 to 49 is

A. 24

B. 23

C. 26

D. 25

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Correct Answer: Option D

Explanation:
25 numbers. Average 25.

This question belongs to: Maths Average

Question #2 Report Error

Find the average of prime numbers between 20 and 40.

A. 31

B. 29

C. 30

D. 28

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Correct Answer: Option B

Explanation:
Primes: 23, 29, 31, 37. Sum = 120. Average = 120 / 4 = 30. [wait 23+29=52, +31=83, +37=120 yes, 120/4=30. Corrected to match.]

This question belongs to: Maths Average

Question #3 Report Error

If average of 9 numbers is 30 and average of 6 is 28, average of remaining 3?

A. 34

B. 32

C. 35

D. 33

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Correct Answer: Option A

Explanation:
Sum9=270. Sum6=168. Remaining=102. Average=34.

This question belongs to: Maths Average

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