Average of 10 numbers 2130. If average of 6 is 2125, average of remaining 4? MCQ with Answer and Explanation

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Average of 10 numbers 2130. If average of 6 is 2125, average of remaining 4?

A. 2137.5

B. 2140

C. 2136

D. 2135

Answer: Option A

Solution (By JKSSB Mock Tests)

Sum10=21300. Sum6=12750. Remaining=8550. Average=2137.5.

This question belongs to: Maths Average

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Question #1

Average of 10 numbers 1530. If average of 6 is 1525, average of remaining 4?

A. 1537.5

B. 1540

C. 1536

D. 1535

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Correct Answer: Option A

Explanation:
Sum10=15300. Sum6=9150. Remaining=6150. Average=1537.5.

This question belongs to: Maths Average

Question #2

The average of 45 numbers is 50. If 5 numbers average 60 are added, new average of 50 numbers?

A. 52

B. 49

C. 50.5

D. 51

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Correct Answer: Option D

Explanation:
Total45=2250. Added=300. Total2550/50=51.

This question belongs to: Maths Average

Question #3

The average of 9 numbers is 25. If one number is 45, find the average of the remaining 8.

A. 22

B. 23

C. 22.5

D. 24

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Correct Answer: Option C

Explanation:
Sum=9×25=225. Remaining sum=225-45=180. Avg=180/8=22.5.

This question belongs to: Maths Average

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