Question 1152453
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<pre>

If one-way distance is "d" kilometers, then one-way time is {{{d/40}}} hours.


The two-ways distance ("to there" and back) is 2d, and two-ways time is  {{{(2d)/80}}} = {{{d/40}}} hours.


In other words, at given condition, all the time is spent for one-way distance "to there", and there is NO TIME for the way back.


Therefore, the trip under given condition is IMPOSSIBLE.    <U>ANSWER</U>
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Solved, answered and explained.  And completed.