Average of 12 numbers 1920. If average of 8 is 1915, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 1920. If average of 8 is 1915, average of remaining 4?

A. 1928

B. 1932

C. 1930

D. 1925

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum12=23040. Sum8=15320. Remaining=7720. Average=1930.

This question belongs to: Maths Average

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Question #1

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The average weight of 25 students is 50 kg. If the weight of teacher is included, average increases by 1 kg. What is teacher's weight?

A. 75

B. 76

C. 74

D. 80

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Correct Answer: Option B

Explanation:
Total students weight=1250. New total for 26=26×51=1326. Teacher=1326-1250=76 kg.

This question belongs to: Maths Average

Question #2

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The average of 720,960,1200 is

A. 970

B. 950

C. 955

D. 960

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Correct Answer: Option D

Explanation:
2880/3=960.

This question belongs to: Maths Average

Question #3

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Average of 1365,1820,2275 is

A. 1815

B. 1810

C. 1830

D. 1820

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Correct Answer: Option D

Explanation:
5460/3=1820.

This question belongs to: Maths Average

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