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Two trains, 350 miles apart, travel toward each other, on different tracks.One leaves at noon and travels 50mph. The other leaves at 1 PM, traveling at 70 mph. At what time will they pass each other.

 

Please show all steps!  I need the answer really in a quickly!

 Oct 29, 2019
 #1
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The first train travels H hours

The second train travels  one hour less  = H  -1

 

And rate * time  = distance....so....

 

50*H  + 70 * (H - 1)    =  350       simplify

 

50H + 70H  - 70  = 350

 

120H  - 70  =  350      add 70 to both sides

 

120H  = 420             divide both sides  by 120

 

H  = 420 /120   =  3.5 hrs

 

So....they meet  at   3:30 PM   

 

 

cool cool cool

 Oct 29, 2019

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