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A man at a speed of 6 km/hr for 1 km and...

A man at a speed of 6 km/hr for 1 km and 8 km/hr for the next 1 km. What is his average speed for the walk of 2 km?

Text Solution

Verified by Experts

Distance traveled is 2 km
Time taken `=(1km)/(6km//hr)+(1km)/(8km//hr)`
`(1/6+1/8)hr=7/(24)hr`
Average speed `=(2kmxx24)/(7hr)=(48)/7 km//hr=7km//hr.`
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