Average of 15 numbers 2410. If average of 9 is 2405, average of remaining 6? MCQ with Answer and Explanation

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Average of 15 numbers 2410. If average of 9 is 2405, average of remaining 6?

A. 2418

B. 2417.5

C. 2420

D. 2415

Answer: Option B

Solution (By JKSSB Mock Tests)

Sum15=36150. Sum9=21645. Remaining=14505. Average=2417.5.

This question belongs to: Maths Average

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Question #1

The average score of 40 matches is 50. If average of first 20 is 45, average of last 20?

A. 52

B. 48

C. 50

D. 55

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Correct Answer: Option D

Explanation:
Total=2000. First=900. Last=1100. Average=55.

This question belongs to: Maths Average

Question #2

Average of 12 numbers 570. If average of 8 is 565, average of remaining 4?

A. 580

B. 575

C. 582

D. 578

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Correct Answer: Option A

Explanation:
Sum12=6840. Sum8=4520. Remaining=2320. Average=580.

This question belongs to: Maths Average

Question #3

The average of 4 numbers is 16. If one number is 24, find the average of the other three.

A. 13

B. 13.33

C. 14

D. 12

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Correct Answer: Option B

Explanation:
Sum=4×16=64. Other sum=64-24=40. Avg=40/3=13.33.

This question belongs to: Maths Average

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