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Yuto and Lian are at train stations 1,880 kilometers apart. Yuto boards a train heading east at an average speed of 220 kilometers per hour. At the same time, Lian boards a train heading west on a parallel track at an average speed of 250 kilometers per hour. How far has Lian traveled when the two trains pass each other?

 Jan 9, 2019
edited by Guest  Jan 9, 2019
 #1
avatar+18965 
0

How long before they meet?

 

1880 km / (220 +250 km/Hr) = 4 hours

Lian speed = 250 km/hr

   250 km/hr x 4 hr =  1000 km

 Jan 9, 2019
edited by ElectricPavlov  Jan 9, 2019
 #2
avatar+103138 
+1

Rate * Time = Distance

 

The total distance they travel = 1880 km .....so......we have this equation

 

220T  + 250T = 1880     simplify

 

470 T  =  1880     divide both sides by  470

 

T = 4  hours

 

So

 

Lian travels   250 * 4   =  1000 km

 

 

cool cool cool

 Jan 9, 2019

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