Average of 10,20,30,40 is MCQ with Answer and Explanation

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Average of 10,20,30,40 is

A. 22.5

B. 25

C. 20

D. 30

Answer: Option B

Solution (By JKSSB Mock Tests)

100/4=25.

This question belongs to: Maths Average

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Question #1

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Average of 9 numbers 2640. If average of 6 is 2635, average of remaining 3?

A. 2645

B. 2655

C. 2650

D. 2648

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Correct Answer: Option C

Explanation:
Sum9=23760. Sum6=15810. Remaining=7950. Average=2650.

This question belongs to: Maths Average

Question #2

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Average of 15 numbers 910. If average of 9 is 905, average of remaining 6?

A. 917.5

B. 920

C. 915

D. 918

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Correct Answer: Option A

Explanation:
Sum15=13650. Sum9=8145. Remaining=5505. Average=917.5.

This question belongs to: Maths Average

Question #3

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Average of 12 numbers 2170. If average of 8 is 2165, average of remaining 4?

A. 2182

B. 2180

C. 2178

D. 2175

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Correct Answer: Option B

Explanation:
Sum12=26040. Sum8=17320. Remaining=8720. Average=2180.

This question belongs to: Maths Average

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