A car traveling the distance 120 km with the speed off 40 km/h returns back with a speed of 30 km/h calculate the average speed of the entire journey
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s=240/7
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see imge
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average speed =total distance /total time taken
V=s1 + s2/ (s1/v1+s2/v2)
=120+120 / (120/40 + 120/30)
= 240/(3+4)
=34.2
hope it will help u
V=s1 + s2/ (s1/v1+s2/v2)
=120+120 / (120/40 + 120/30)
= 240/(3+4)
=34.2
hope it will help u
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