Question 1005754
This is familiar, and a solution was given for this same problem at least a couple of times within the last four or five months.  


This is a uniform rates type problem.  R for rate, V for volume of water in gallons, T for time in hours, will be related as RT=V.  Treat the problem the same way you might treat other uniform rates problems.  Make a data table, and assign whatever variables seem fitting.


Fill-in what you need:
<pre>
             rate          time         volume
COOPERS       30
JACKSON       25
TOTALS                       50          1425
</pre>