A man begins his journey from delhi to Jaipur by car. He covers a distance of $120$ km at a speed of $60$ km/h, next $160$ km at $80$ km/h.Calculate the average seed of the whole journey.

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Solution

Initial speed of car $60 k m p h$
The distance travelled is $120 k m$
The time taken is $\frac{120}{60} = 2 h$
Final speed of car $80 k m p h$
The distance travelled is $160 k m$
The time taken is $\frac{160}{80} = 2 h$
Average speed of Car $\frac{T o t a l d i s t a n c e}{T o t a l t i m e} \frac{120 + 160}{2 + 2} \frac{280}{4} = 70 k m p h$

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A man begins his journey from delhi to Jaipur by car. He covers a distance of 120 km at a speed of 60 km/h, next 160 km at 80 km/h.Calculate the average seed of the whole journey.

Initial speed of car 60kmphThe distance travelled is 120kmThe time taken is 12060=2hFinal speed of car 80kmphThe distance travelled is 160kmThe time taken is 16080=2hAverage speed of Car TotaldistanceTotaltime120+1602+22804=70kmph

A man begins his journey from delhi to Jaipur by car. He covers a distance of $120$ km at a speed of $60$ km/h, next $160$ km at $80$ km/h.Calculate the average seed of the whole journey.