Average speed to cover a distance in two equal parts at speeds x and y is MCQ with Answer and Explanation

Question Report Error

Average speed to cover a distance in two equal parts at speeds x and y is

A. xy/(x+y)

B. (x+y)/2

C. x+y

D. 2xy/(x+y)

Answer: Option D

Solution (By JKExamLibrary)

Harmonic mean for equal distances.

This question belongs to: Maths Average

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Practice More Average Questions

Question #1 Report Error

Average of numbers from 25 to 50 is

A. 36.5

B. 38

C. 37.5

D. 37

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Correct Answer: Option C

Explanation:
(25+50)/2=37.5.

This question belongs to: Maths Average

Question #2 Report Error

If average of 20 numbers is 30 and 10 numbers average 25, average of remaining 10?

A. 40

B. 30

C. 35

D. 32.5

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Correct Answer: Option C

Explanation:
Sum20=600. Sum10=250. Remaining=350. Average=35.

This question belongs to: Maths Average

Question #3 Report Error

Average of 15 numbers 1310. If average of 9 is 1305, average of remaining 6?

A. 1315

B. 1318

C. 1317.5

D. 1320

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Correct Answer: Option C

Explanation:
Sum15=19650. Sum9=11745. Remaining=7905. Average=1317.5.

This question belongs to: Maths Average

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