Question

Two trains moving with the speed of 80km/h and 85km/h, start at the same time from
two stations 495 km apart. If both the trains run in opposite directions, after how many hours will they cross each other​

Answer 1

Question

Two trains moving with the speed of 80km/h and 85km/h, start at the same time from two stations 495 km apart. If both the trains run in opposite directions, after how many hours will they cross each other.

Given

time t=2hr

total distance =340

Solution

Distance travel by both train =340−30=310km

let speed of train x and x+5respectively.

$speed = \frac{distance}{time}$

distance travel by train 1 in 2hr is S=2x

distance travel by train 2 in 2hr is S 2

=2(x+5)=2x+10

distance travel by both the train in 2hr is S=2x+2x+10=4x+10=310

x=75 km/hr

x+5=75+5=80 km/hr

hence,the speed of each train is 75 km/hr and 80 km/hr.

$bts ❤ exo$