<PRE><B>Question 700867</B>
&lt;br&gt;&lt;font face=&quot;Tahoma&quot;&gt;Let x stand for Saturday.&lt;br&gt;

Let y stand for Sunday.&lt;br&gt;

Then we know:&lt;br&gt;

{{{x+y=8}}}  and  {{{x=y+1.5}}}&lt;br&gt;

Then we can just use substitution to solve this system of equations.&lt;br&gt;

{{{(y+1.5)+y=8}}}&lt;br&gt;

{{{2y+1.5=8}}}&lt;br&gt;

{{{2y=6.5}}}&lt;br&gt;

{{{y=3.25}}}&lt;br&gt;

And of course, if y is 3.25, then:&lt;br&gt;

{{{x=3.25+1.5}}}&lt;br&gt;

{{{x=4.75}}}&lt;br&gt;

So we know that Saturday, he walked 4.75 miles,&lt;br&gt;

and Sunday he walked 3.5 miles.&lt;br&gt;

You could use trial and error to solve this, but this is why Algebra is so useful.&lt;br&gt;

I hope this helps!  Keep practicing!  :)&lt;br&gt;

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