Asked by ashwini

a car travels first one third with speed of 10km/hr,next one third distance with 20km/hr.What is the average of car for whole journey

10 years ago

Answered by PsyDAG

Can't tell unless we get speed for last third.

10 years ago

Answered by Aditya

2V1V2/V1+V2

2×10×20/10+20
400/30=10.333km/h

5 years ago

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