If average of 9 numbers is 30 and average of 6 is 28, average of remaining 3? MCQ with Answer and Explanation

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If average of 9 numbers is 30 and average of 6 is 28, average of remaining 3?

A. 33

B. 34

C. 32

D. 35

Answer: Option B

Solution (By JKSSB Mock Tests)

Sum9=270. Sum6=168. Remaining=102. Average=34.

This question belongs to: Maths Average

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Question #1

Average of 8 numbers 1750. If average of 5 is 1745, average of remaining 3?

A. 1755

B. 1758.33

C. 1760

D. 1757

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Correct Answer: Option B

Explanation:
Sum8=14000. Sum5=8725. Remaining=5275. Average≈1758.33.

This question belongs to: Maths Average

Question #2

The average of 840,1120,1400 is

A. 1130

B. 1115

C. 1110

D. 1120

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Correct Answer: Option D

Explanation:
3360/3=1120.

This question belongs to: Maths Average

Question #3

Average of 20 numbers 45. If 5 numbers average 50 included, new average of 25?

A. 47

B. 44

C. 46

D. 45.5

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Correct Answer: Option C

Explanation:
Total20=900. Added=250. Total1150/25=46.

This question belongs to: Maths Average

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