Posted by **Kate** on Thursday, December 3, 2009 at 11:10pm.

A train left Podunk and traveled west at 70 km/h. Two hours later, another train left Podunk and traveled east at 90 km/h. How many hours had the first train traveled when they were 1420 km apart?

How do you solved this?

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**Reiny**, Thursday, December 3, 2009 at 11:20pm
I translated your English into Math and got

70t+140 + 90t = 1420

Take it from there.

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**Kate**, Thursday, December 3, 2009 at 11:23pm
where did you get 140 from?

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**Reiny**, Thursday, December 3, 2009 at 11:24pm
didn't the first train go for 2 hrs at 70 km/h ? How far did it go in that time ?

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**Kate**, Thursday, December 3, 2009 at 11:27pm
Got it. Thank you very much

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**Reiny**, Thursday, December 3, 2009 at 11:29pm
Welcome!

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**Kate**, Friday, December 4, 2009 at 12:09am
a train left podunk and traveled north at 75 km/h. two hours later, another train left podunk and travled in the same direction at 100 km/h. how many hours had the first train traveled when the second train overtook it?

can someone help set this up?

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**aly**, Saturday, October 16, 2010 at 3:42pm
8 hrs.....

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**katie**, Sunday, May 1, 2011 at 8:17pm
aly, its not 8 hrs......

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**Brando**, Tuesday, June 21, 2011 at 8:46pm
You would set them up equal to each other.

Looks like.

75T + 150 = 100T

T= 6

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