<PRE><B>Question 542435</B>
&lt;br&gt;&lt;font face=&quot;Tahoma&quot;&gt;Given:&lt;br&gt;

2 inches per hour&lt;br&gt;

Want:&lt;br&gt;

1 foot per x hours&lt;br&gt;

Let&#39;s change the foot into inches to make it easier.  Then we want&lt;br&gt;

12 inches per x hours&lt;br&gt;

From this it is fairly straightforward to see that it would need to rain for 6 hours to accumulate 12 inches of rain.&lt;br&gt;

But we can also set it up as a proportion.  In other words:&lt;br&gt;

2 inches is to 1 hour as 12 inches is to x hours?&lt;br&gt;

{{{2/1=12/x}}}&lt;br&gt;

Then we just need to cross multiply and solve for x:&lt;br&gt;

{{{2*x=1*12}}}&lt;br&gt;

{{{2x=12}}}&lt;br&gt;

{{{x=6}}}&lt;br&gt;

So again, it would take 6 hours to have one foot (or 12 inches) of rainfall.&lt;br&gt;

I hope this helps!&lt;br&gt;</PRE>