Question 618943
They are approaching each other at the sum of
their speeds
Let {{{ s }}} = the speed of the slower car in km/hr
{{{ s + 5 }}} = the speed of the faster car in km/hr
{{{ 945 = ( s + s + 5 )*7 }}}
{{{ 945 = 14s + 35 }}}
{{{ 14s = 910 }}}
{{{ s = 65 }}}
{{{ s + 5 = 70 }}}
The faster car's rate is 70 km/hr