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December 18, 2014

December 18, 2014

Posted by **Ann** on Thursday, July 14, 2011 at 4:22pm.

- Algembra -
**Henry**, Friday, July 15, 2011 at 5:34pmTrain #1 = t hrs.

Train #2 = (t-4)hrs.

When train #2 catches up, they would have traveled the same distance:

d1 = d2.

85t = 125(t-4),

85t = 125t - 500,

125t - 85t = 500,

40t = 500,

t = 12.5 hrs.

d = Vt = 85 * 12.5 = 1062.5km.

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