The average of 840,1120,1400 is MCQ with Answer and Explanation

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The average of 840,1120,1400 is

A. 1120

B. 1115

C. 1130

D. 1110

Answer: Option A

Solution (By JKSSB Mock Tests)

3360/3=1120.

This question belongs to: Maths Average

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Question #1

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The average of 8 numbers is 44. If one number is 56, find the average of the remaining 7.

A. 43

B. 42

C. 41.5

D. 42.29

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Correct Answer: Option D

Explanation:
Sum=8×44=352. Remaining sum=352-56=296. Avg=296/7=42.29.

This question belongs to: Maths Average

Question #2

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Average of 9 numbers 1890. If average of 6 is 1885, average of remaining 3?

A. 1895

B. 1898

C. 1900

D. 1905

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Correct Answer: Option C

Explanation:
Sum9=17010. Sum6=11310. Remaining=5700. Average=1900.

This question belongs to: Maths Average

Question #3

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Average of 20 numbers 50. If each number is doubled, new average?

A. 100

B. 50

C. 75

D. 25

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Correct Answer: Option A

Explanation:
New average =100.

This question belongs to: Maths Average

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