Question 567474
How much of a head start does Mr. H get in {{{ 3.5 }}} hrs ?
{{{ d[1] = 40*3.5 }}}
{{{ d[1] = 140 }}}
Start a stopwatch when Mrs. H leaves
They both will travel for the same time, {{{ t }}}
Let {{{ d }}} = distance Mrs. H has to travel until they meet
Mrs. H's equation:
{{{ d = 50t }}}
Mr. Hl's equation:
{{{ d - 140 = 40t }}}
By substitution,
{{{ 50t - 140 = 40t }}}
{{{ 10t = 140 }}}
{{{ t = 14 }}} hrs
It will take her 14 hrs to overtake him