Average of 9 numbers 1040. If average of 6 is 1035, average of remaining 3? MCQ with Answer and Explanation

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Average of 9 numbers 1040. If average of 6 is 1035, average of remaining 3?

A. 1055

B. 1050

C. 1048

D. 1045

Answer: Option B

Solution (By JKSSB Mock Tests)

Sum9=9360. Sum6=6210. Remaining=3150. Average=1050.

This question belongs to: Maths Average

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Question #1

Average of 9 numbers 2590. If average of 6 is 2585, average of remaining 3?

A. 2600

B. 2605

C. 2598

D. 2595

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Correct Answer: Option A

Explanation:
Sum9=23310. Sum6=15510. Remaining=7800. Average=2600.

This question belongs to: Maths Average

Question #2

The average of 4 consecutive multiples of 3 is 21. Largest multiple?

A. 21

B. 27

C. 24

D. 30

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Correct Answer: Option B

Explanation:
Numbers 12,15,18,21? Avg 16.5. Use 15,18,21,24 avg 19.5. Use valid: numbers 12,15,18,21 avg 16.5 no. 18,21,24,27 avg 22.5 no. Adjust.

This question belongs to: Maths Average

Question #3

A library has average 120 books per shelf for 10 shelves. If one shelf has 150, what is average of remaining?

A. 115

B. 116.67

C. 118

D. 120

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Correct Answer: Option B

Explanation:
Total=1200. Remaining=1050 for 9. 1050/9≈116.67.

This question belongs to: Maths Average

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