<PRE><B>Question 1128539</B>
&lt;br&gt;
You need to find the width, so let that be the variable.&lt;br&gt;
Let w = width&lt;br&gt;
Then the height is 1 more than twice the width:&lt;br&gt;
Then h = 2w+1&lt;br&gt;
The volume is lwh; and you are given v=100 and l=10.  So&lt;br&gt;
{{{100 = 10(w)(2w+1)}}}
{{{w(2w+1) = 10}}}&lt;br&gt;
If you want to (or have to) use formal algebra, that gives you a quadratic equation that is relatively easy to solve.&lt;br&gt;
But you should be able to see the solution without formal algebra.  What two numbers multiplied together give a product of 10, with one of the numbers being 1 more than twice the other?</PRE>