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OpenStudy (anonymous):
Two trains are 150 km apart. Train A moves at 50.0 km/hr towards train B, which moves at 30.0 km/hr toward train A on the same track. How much time (in hours) do they have before the trains collide?
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OpenStudy (anonymous):
let the meet in x hours. then 50 x+30 x=150 find x
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