Question

a non stop bus goes from one station to another station with the speed of 54 km per hour the same bus returns from the second station to first station with the speed of 36 km per hour find the average speed of bus for the entire journey

Answer 1

AverageSpeed=(d1+d2)/(t1+t2)

t1=d1/s1;t2=d2/s2

Here,

d1=d2=d;s1=36kmph,s2=54kmph

Substituting the values you get 43.2kmph

Answer 2

is it 45 km per hour?