two trains start simultaneously from two station 300 km apart and move towards each other the speed of one train is more than the other by 20 km per hour if the distance between the train after 2 hour is 20 km find the speed of the trains
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Let speed of 1st train be x km/hr
speed of 2nd train=(x+20)km/hr
t=2 hr
distance travelled by train1 in 2 hrs=2*x km
distance travelled by train2 in 2 hrs=2*(x+20) km
distance between two train after 2 hrs= 20 km
300-[2x+2x+40]=20
300-20=4x+40
280-40=4x
4x=240
x=240/4
x=60
speed of 1st train =60km/hr
speed of 2nd train =(60+20)km/hr =80km/hr
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