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?
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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.
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