Average of 15 numbers 1460. If average of 9 is 1455, average of remaining 6? MCQ with Answer and Explanation

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Average of 15 numbers 1460. If average of 9 is 1455, average of remaining 6?

A. 1465

B. 1468

C. 1470

D. 1467.5

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum15=21900. Sum9=13100- wait 9*1455=13095. Remaining=8805. Average=1467.5.

This question belongs to: Maths Average

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Question #1

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

A. 51

B. 52

C. 49

D. 50.5

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Correct Answer: Option A

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

This question belongs to: Maths Average

Question #2

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Average of 50 numbers 45. If 10 numbers average 55 removed, new average of 40?

A. 42.5

B. 41

C. 40

D. 43

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Correct Answer: Option A

Explanation:
Total=2250. Removed=550. Remaining=1700/40=42.5.

This question belongs to: Maths Average

Question #3

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The average weight increases by 1 kg when one of 60 kg is replaced by new. For 10 people, new weight?

A. 80

B. 65

C. 70

D. 75

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Correct Answer: Option C

Explanation:
Increase 10*1=10. New weight=60+10=70 kg.

This question belongs to: Maths Average

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