Question 1111987
<pre>
FAMILY       RATE        TIME      VOLUME
Stewart      35          t          35t
James        30          45-t       30(45-t)
Total                    45         1500
</pre>


{{{highlight_green(35t+30(45-t)=1500)}}}

{{{7t+6(45-t)=300}}}

{{{highlight(t=30)}}}------Stewart

{{{highlight(15)}}}--------James