Average of 20,40,60,80,100,120 is MCQ with Answer and Explanation

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Average of 20,40,60,80,100,120 is

A. 60

B. 70

C. 80

D. 75

Answer: Option B

Solution (By JKSSB Mock Tests)

420/6=70.

This question belongs to: Maths Average

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Question #1

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Average of 10 numbers 730. If average of 6 is 725, average of remaining 4?

A. 740

B. 735

C. 736

D. 737.5

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Correct Answer: Option D

Explanation:
Sum10=7300. Sum6=4350. Remaining=2950. Average=737.5.

This question belongs to: Maths Average

Question #2

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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 #3

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Average of 15 numbers 1610. If average of 9 is 1605, average of remaining 6?

A. 1620

B. 1615

C. 1618

D. 1617.5

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Correct Answer: Option D

Explanation:
Sum15=24150. Sum9=14445. Remaining=9705. Average=1617.5.

This question belongs to: Maths Average

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