Average of 9 numbers 390. If average of 6 is 385, average of remaining 3? MCQ with Answer and Explanation

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Average of 9 numbers 390. If average of 6 is 385, average of remaining 3?

A. 398

B. 400

C. 405

D. 395

Answer: Option B

Solution (By JKSSB Mock Tests)

Sum9=3510. Sum6=2310. Remaining=1200. Average=400.

This question belongs to: Maths Average

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Question #1

Average of 12 numbers 2770. If average of 8 is 2765, average of remaining 4?

A. 2782

B. 2778

C. 2775

D. 2780

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Correct Answer: Option D

Explanation:
Sum12=33240. Sum8=22120. Remaining=11120. Average=2780.

This question belongs to: Maths Average

Question #2

Average of 9 numbers 2340. If average of 6 is 2335, average of remaining 3?

A. 2350

B. 2355

C. 2348

D. 2345

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Correct Answer: Option A

Explanation:
Sum9=21060. Sum6=14010. Remaining=7050. Average=2350.

This question belongs to: Maths Average

Question #3

The average of 5 numbers is 25. If one number is 35, find the average of the remaining 4.

A. 22

B. 23

C. 22.5

D. 24

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Correct Answer: Option C

Explanation:
Sum=5×25=125. Remaining sum=125-35=90. Avg=90/4=22.5.

This question belongs to: Maths Average

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