Question

The dis between two stationsA and B is 540 km. Two trains start simultaneously from these stations on parallel tracks to cross each other. The speed of one of them is greater than the other by 5 km per hour. If the distance between these two trains after 3hours of their start is 165 km find the speed of each train?

Answer 1

let the speed of one train is x km/h

then the speed of another train is (x+5)km/h

distance travelled by first train in three hour is x*3=3x

distance travelled by another train is(3(x+5)=3x+15

the total distance travelled by two trains are 3x+3x+15=6x+15

acc.to.ques.

6x+15=540

6x=540-15=525

x=525/6=175/2 km/h

speed of another train=175/2+5=185/2 =92.5 km/h