SOLUTION: a train travel first 50km at speed of 75 km/hr next 90km at speed of 80km/hr and other 240km at aspped of 120km/hr find the total time taken and avg speed of train?

Question 888114: a train travel first 50km at speed of 75 km/hr next 90km at speed of 80km/hr and other 240km at aspped of 120km/hr find the total time taken and avg speed of train?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
a train travel first 50km at speed of 75 km/hr next 90km at speed of 80km/hr and other 240km at a speed of 120km/hr find the total time taken and avg speed of train?
***
travel time=distance/speed
total travel time=
total distance traveled=50+90+240=380
average speed=total distance traveled/total travel time=380/(91/24)=100.22
total time taken=3.79 hrs
avg speed of train=100.22 km/hr

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