Question 512129
Let {{{ d[1] }}} = Jose's head start in km
Let {{{ t[1] }}} = time between Jose's leaving and Rob's leaving
After Rob leaves, Jose travels {{{ 40*5 = 200 }}} km
During the same time, Rob travels {{{ 48*5 = 240 }}} km
{{{ d[1] = 240 - 200 }}}
{{{ d[1] = 40 }}} km
 Jose drove for {{{ t[1] = 40/40 }}}, or 1 hour until Rob left
In all, Jose drove for {{{ 1 + 5 = 6 }}} hours
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check answer:
Rob's equation:
{{{ d = 48*5 }}}
{{{ d = 240 }}}
Jose's equation:
{{{ d = 40*6 }}}
{{{ d = 240 }}}
OK