Question

The distance between two stations is 425km. Two trains start simultaneously form
stations on parallel tracks to cross each other. The speed of one of them is greater than
that of the other by 5km/h. If the distance between the two trains after 3 hours of their start
is 20km, find the speed of each train.​

Answer 1

Answer:

Speed of first train= 65km/hr.

Speed of second train=70km/hr.

Step-by-step explanation:

Let the speed of the train be x km/hr.

So , speed of another train= (x+5) km/hr.

Speed = distance/time.

x= distance/3.

distance covered by first train=3x.

Similarly, distance covered by second train=3(x+5).

So, the distance travelled by first train + distance covered by second train + distance between them= length of track.

3x + 3(x+5)+20 = 425

6x +35 = 425

6x= 425 -35

6x =190

x=65km/hr .

Speed of second train= x+5 = 65+5=70 km/hr.