Question 1162610
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<pre>

If you read the problem attentively and then think 30 seconds after reading, you may GUESS the solution MENTALLY:


    12 mph cycling and 2 mph hiking.      <U>ANSWER</U>


If you still prefer algebra solution, then write this "time" equation


    {{{12/(x+10)}}} + {{{8/x}}} = 5  hours,


where x is the rate hiking.


To solve this equation, multiply both sides by x*(x+10) and then reduce this equation to the standard quadratic equation form.


Then solve EITHER via quadratic formula OR factoring.


<U>CHECK</U>.  {{{12/12}}} + {{{8/2}}} = 1 + 4 = 5 hours.
</pre>

Solved.


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Using &nbsp;"time" &nbsp;equation is a &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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