Question 1069502
Train 1 :{{{45*t=D}}}
Train 2 : {{{35(t+0.4)=D}}}
So,
{{{45t=35(t+0.4)}}
{{{45t=35t+14}}}
{{{10t=14}}}
{{{t=1.4}}}
So,
{{{D=45*1.4}}}
{{{D=63}}}{{{miles}}}