Average of 9 numbers 1640. If average of 6 is 1635, average of remaining 3? MCQ with Answer and Explanation

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Average of 9 numbers 1640. If average of 6 is 1635, average of remaining 3?

A. 1648

B. 1645

C. 1655

D. 1650

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum9=14760. Sum6=9810. Remaining=4950. Average=1650.

This question belongs to: Maths Average

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Question #1

Average of 9 numbers 2290. If average of 6 is 2285, average of remaining 3?

A. 2298

B. 2295

C. 2300

D. 2305

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Correct Answer: Option C

Explanation:
Sum9=20610. Sum6=13710. Remaining=6900. Average=2300.

This question belongs to: Maths Average

Question #2

Average of 15 numbers 2710. If average of 9 is 2705, average of remaining 6?

A. 2718

B. 2715

C. 2720

D. 2717.5

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Correct Answer: Option D

Explanation:
Sum15=40650. Sum9=24345. Remaining=16305. Average=2717.5.

This question belongs to: Maths Average

Question #3

The average of 8 numbers is 26. If one number is 30, find the average of the remaining 7.

A. 26

B. 25.43

C. 24.86

D. 25.5

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Correct Answer: Option B

Explanation:
Sum=8×26=208. Remaining sum=208-30=178. Avg=178/7=25.43.

This question belongs to: Maths Average

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