Question 1125288
Separation speed is  {{{42-35=7}}}, miles per hour.


Rate is Distance divided by Time.
{{{R=D/T}}}

{{{RT=D}}}

{{{T=D/R}}}


when 9 miles apart?
D=9 and R=7


{{{9/7}}}


{{{1&2/7}}}


1 hour 17  minutes