Average of 9 numbers 1440. If average of 6 is 1435, average of remaining 3? MCQ with Answer and Explanation

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Average of 9 numbers 1440. If average of 6 is 1435, average of remaining 3?

A. 1450

B. 1448

C. 1455

D. 1445

Answer: Option A

Solution (By JKExamLibrary)

Sum9=12960. Sum6=8610. Remaining=4350. Average=1450.

This question belongs to: Maths Average

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Question #1 Report Error

The average of 6 numbers is 14. If each number is divided by 2, what is the new average?

A. 6

B. 9

C. 8

D. 7

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Correct Answer: Option D

Explanation:
New average =14/2=7.

This question belongs to: Maths Average

Question #2 Report Error

Average speed for two equal times at 30 and 50 km/h?

A. 38 km/h

B. 45 km/h

C. 40 km/h

D. 42 km/h

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Correct Answer: Option C

Explanation:
Arithmetic mean for equal time: (30+50)/2=40.

This question belongs to: Maths Average

Question #3 Report Error

Average of 20 numbers 180. If average of 12 is 175, average of remaining 8?

A. 185

B. 187.5

C. 188

D. 190

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Correct Answer: Option B

Explanation:
Sum20=3600. Sum12=2100. Remaining=1500. Average=187.5.

This question belongs to: Maths Average

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