a train leaves a station and travels north at 50 km/hr. two hours later, a second train leaves on a parallel track and travels north at 90 km/hr. how far from the station will they meet ? help PLEASE:D

Question

amistre64 · Answer

if they are on 2 seperate tracks; they never meet

amistre64 · Answer

the idea here is to see when the time involved produces equal distances

amistre64 · Answer

A goes 50 for 2 hours; he got 100 head start.

100 + 50t = some Distance

90t = the same amount of Distance

when does: 90t = 100+50t ?

anonymous · Answer

so i combine like terms there then solve for t?
:)

amistre64 · Answer

yep; then use that "t" in either equation to get the distance traveled

anonymous · Answer

ok i got 4 so now i can multipy by 90t?

amistre64 · Answer

you can, but let me chk the math.

90t = 100 + 50t

9t = 10 + 5t
-5t         -5t
------------
4t = 10

t = 10/4 = 5/2

amistre64 · Answer

you got 4, but forgot to divide it off to find "t" all by itself

amistre64 · Answer

or something like that

amistre64 · Answer

90(5)/2 = 45(5) = 200 + 25 = 225

anonymous · Answer

wow, thanks so much :D

amistre64 · Answer

youre welcome