<PRE><B>Question 412616</B>
{{{18t+18=45t}}}
-
18t = How far George has traveled during a given time.
18  = How far George traveled during the hour before June started riding.
45t = How far June has traveled during a given time.
-
Solving this, you get: 
{{{45t-18t = 18}}}
{{{27t=18}}}
{{{t=18/27}}}
Therefore, the time taken is 18/27 of an hour, which is 2/3 of an hour, or 40 minutes.
{{{highlight(t=40)}}} minutes, or {{{highlight(t=2/3)}}} of an hour.</PRE>