A bus travels the first 15km at a uniform speed of 30km/h next 10 km at a uniform speed of 20 km/h and final 75 km at a uniform speed of 50 km/h . the average speed for the entire journey of the train?
A bus travels the first 15km at a uniform speed of 30km/h next 10 km at a uniform speed of 20 km/h and final 75 km at a uniform speed of 50 km/h . the average speed for the entire journey of the train?
Answers (1)
Average speed= (total distance covered) / ( total time taken)
Total time taken = 15/30+ 10/20 +75/50 = 0.5+0.5+1.5 = 2.5 hours