Question

the distance between two stations a and b is 5 40 kilometre. Two trains start simultaneously from the stations on parallel tracks to cross each other. the speed of one of them is greater than the other by 5 kilometre per hour. is the distance between these two trains after 3 hours of their start is 165 kilometre find the speed of each train? ​

Answer 1

Answer:

hope this helps u:-)

Step-by-step explanation:

Let r be the speed of first train.

And r+5 be the speed of other train.

The distance first train travels in 2 hours is =2r

The distance other train travels in 2 hours is (r+5)×2=2(r+5)

Now we know that the distance the first train travels (2r) plus the distance the other train travels 2(r+5) equals 540−30=510.

So, 2r+2(r+5)=510

⇒2r+2r+10=510

⇒4r=500

⇒r=125

Thus, speed of first train is 125 mph.

Therefore, the speed of other train is r+5=125+5=130 mph.