Question 985150
<pre>


FAST        96      {{{3&1/2}}}           d
SLOW        r      {{{3&1/2+1&5/6}}}        d

</pre>


Each train going the same distance d, means the distance terms are equal.
{{{96(3&1/2)=r*(3&1/2+1&5/6)}}}


{{{96(7/2)=r(3+1+3/6+5/6)}}}


{{{96(7/2)=r(4+8/6)}}}


{{{96(7/2)=r(4+4/3)}}}


{{{96(7/2)=r(16/3)}}}


{{{r=96(7/2)(3/16)}}}


{{{r=24(7/2)(3/4)=6(7/2)(3)}}}


{{{r=3*7*3}}}


{{{highlight(r=63)}}}