<PRE><B>Question 380125</B>
If a train A is going 250 mph from a distance of 300 miles away,
 and train B is going 200 mph from opposite direction 250 miles away.
 How many miles will train A travel until it hits train B?
:
We can determine that the two trains are initially; 300 + 250 = 550 mi apart
:
They will be closing in on each other at: 250 + 200 = 450 mi per hr
:
Find the elapsed time that this unfortunate collision will occur
{{{550/450}}} = 1.22 hrs
:
Find how far that train A will travel when this happens
1.22(250) = 305.6 mi
:
:
Check this by finding how far train B will travel
1.22(200) 244.4 mi
:
Add the two distances 305.6 + 244.4 = 550 mi, confirms our solution</PRE>