Question

(answer with one variable)

Q. The distance between two stations is 482 kilometers . 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 4 kilometers per hour . If the distance between the two trains after three hours is 20 kilometers , Find the speed of each train .

pls pls pls answer fast ..........

Answer 1

let train be A and B

speed of A = x

speed of B =(x+4)

dist. travelled by A=3x

dist. travelled by B=(x+4)3=3x+12

then total dist travelled by A and B

= 3x+3x+12 =6x+12

now A/q

or 6x+12=482-20

or x =75

so speed of A=75 km/h

speed of B = 79km/h