Question 1143107
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<pre>
Let  d  be one way distance (in kilometers).


Then the time to travel "to there"  is  {{{d/60}}} hours, while the time travel back is  {{{d/80}}}  hours.


The total time is 5 hours and 30 minutes, or  {{{5}}}{{{1/2}}}  hours = {{{11/2}}} hours.


It gives you the "time" equation

    {{{d/60}}} + {{{d/80}}} = {{{11/2}}}   hours.


To solve the equation, multiply both sides by 240. You will get


    4d + 3d = 1320,

    7d       = 1320

     d       = 1320/7 = 188.57 km.


The two ways distance is  2*188.57 = 377.14 kilometers.    <U>ANSWER</U>


<U>CHECK</U>.  {{{188.57/60}}} + {{{188.57/80}}} = 5.5 hours.   ! Correct !
</pre>


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Using &nbsp;"time" &nbsp;equation is the &nbsp;STANDARD &nbsp;method of solving such problems.

From this lesson, &nbsp;learn on how to write, &nbsp;how to use and how to solve a &nbsp;"time" &nbsp;equation.


To see many other similar solved problems, &nbsp;look into the lessons

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&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/word/travel/Time-equation-HOW-TO-write-it-and-how-to-solve-it.lesson>Time equation: HOW TO use, HOW TO write and HOW TO solve it</A> 

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