Question 1187700
Two trains are now 150 miles apart,<pre>
So Distance = 150</pre>the westbound train traveling twice as fast as
the eastbound train.<pre>
So let the eastbound train's rate is r.
Then the westbound train's rate is 2r.
Their approach rate is the sum of their rates, 3r<pre>
So {{{RATE = 3r}}}</pre></pre>the trains will crash in 1-1/4 hours.<pre>So {{{TIME = 1&1/4}}}
DISTANCE = (RATE)(TIME)
    {{{125 = (3r)(1&1/4)}}}
    {{{125 = (3r)(5/4)}}}
    {{{125 = 15r/4}}}
    {{{500 = 15r}}}
    {{{33&1/3 = r}}}

The eastbound train's speed = r = 33 1/3 mph
The westbound train's speed = 3r = 100 mph 
 
Edwin</pre>