Average speed for two equal times at 30 and 50 km/h? MCQ with Answer and Explanation

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

A. 42 km/h

B. 40 km/h

C. 45 km/h

D. 38 km/h

Answer: Option B

Solution (By JKSSB Mock Tests)

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

This question belongs to: Maths Average

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Practice More Average Questions

Question #1

Average of 1305,1740,2175 is

A. 1735

B. 1740

C. 1730

D. 1750

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Correct Answer: Option B

Explanation:
5220/3=1740.

This question belongs to: Maths Average

Question #2

Average of 15 numbers 560. If average of 9 is 555, average of remaining 6?

A. 565

B. 570

C. 568

D. 567.5

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Correct Answer: Option D

Explanation:
Sum15=8400. Sum9=4995. Remaining=3405. Average=567.5.

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Question #3

The average of 8 numbers is 22. If each number is decreased by 2, what is the new average?

A. 24

B. 22

C. 20

D. 18

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Correct Answer: Option C

Explanation:
New average =22-2=20.

This question belongs to: Maths Average

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