A train travels from station a to station b with a speed of 36kmph and returns to a with the speed of 54kmph.What is the average speed
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A train travels from station a to station b with a speed of 36kmph and returns to a with the speed of 54kmph.What is the average speed is 45KMPH
PunitB:
The answer would be 43.2 KM/H
Assuming distance between a and b is x, t1 = x/36 and t2 = x=54. Average speed = total distance / total time = (x+x)/(t1+t2) = 2x / (x/36+x/54) = 2/(0.02778+0.01852) = 43.2km/hr
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average speed= total distance/ total time
=36+54/1+1 kmph
=90/2kmph
=45kmph
=36+54/1+1 kmph
=90/2kmph
=45kmph
Assuming distance between a and b is x, t1 = x/36 and t2 = x=54. Average speed = total distance / total time = (x+x)/(t1+t2) = 2x / (x/36+x/54) = 2/(0.02778+0.01852) = 43.2km/hr
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