Average of 9 numbers 2540. If average of 6 is 2535, average of remaining 3? MCQ with Answer and Explanation

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Average of 9 numbers 2540. If average of 6 is 2535, average of remaining 3?

A. 2545

B. 2548

C. 2550

D. 2555

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum9=22860. Sum6=15210. Remaining=7650. Average=2550.

This question belongs to: Maths Average

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Question #1

The average of 10 numbers is 12. If each number is divided by 4, what is the new average?

A. 3

B. 5

C. 4

D. 2

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Correct Answer: Option A

Explanation:
New average =12/4=3.

This question belongs to: Maths Average

Question #2

Average of 9 numbers 1590. If average of 6 is 1585, average of remaining 3?

A. 1598

B. 1605

C. 1595

D. 1600

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Correct Answer: Option D

Explanation:
Sum9=14310. Sum6=9510. Remaining=4800. Average=1600.

This question belongs to: Maths Average

Question #3

A man travels first half distance at 20 km/h, second at 30 km/h. Average speed?

A. 24 km/h

B. 22 km/h

C. 25 km/h

D. 26 km/h

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Correct Answer: Option A

Explanation:
2*20*30/(20+30)=1200/50=24 km/h.

This question belongs to: Maths Average

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