The distance between two cities is 30 km...

The distance between two cities is 30 km. A man goes with 30 km speed per hour and returns with 20 km. speed per hour. What is his average speed?

25 km./hr

24 km./hr.

10 km./hr.

26 km./hr.

Text Solution

Verified by Experts

The correct Answer is:

Average speed `=(2(30xx20))/(30+20)`
`=(1200)/(50)=24` km per hour

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