A train travels from A to B at the rate of 20km/hr and from B to A at the rate of 30km/hr,find the average speed.
(2*20*30)/(20+30)=1200/50=24km/hr
Jagan went to another town covering 240km by car moving at 60km/hr. Then he covered 400km by train moving at 100km/hr and the rest 200km he covered by bus moving at 50km/hr.The average speed during the whole journey is:
Two trains are travelling in the same direction with speeds of 30km/hr and 58km/hr respectively.A man in the slower train passes the faster train in 18s.Find the length of the faster train.
How many seconds will a 500m long train take to cross a man,walking with a speed of 3km/hr in the direction of moving train if the speed of the train is 63km/hr.
Two trains 132m and 108m in length are running towards each other on parallel lines at the rate of 32km/hr and another at 40km/hr.In what time will they be closer to each other from the moment they meet?
A train 150m long passes a telegraph post in 12s.Find speed of the train.