Question 697683
Her rate of walking is {{{ 10 / 3 }}} ft/sec
{{{ d = r*t }}}
{{{ 1600 = ( 10/3 )*t }}}
Multiply both sides by {{{ 3 }}}
{{{ 4800 = 10t }}}
{{{ t = 4800/10 }}}
{{{ t = 480 }}} sec
and, since there are {{{ 60 }}} sec/min
{{{ 480/60 = 8 }}} 
It takes her 8 min to get there