Question 1045287
Information for the description is missing.


QA:

<pre>
Which Printer            RATE           TIME         PAGES

OLD                      1080            t

NEW                       R              t

Total                                                2752
</pre>


Basic work rates rule is like r*T=W for rate, TIME, and amount of work here in unit of "pages".


Continuing to fill the table,
<pre>
Which Printer            RATE           TIME         PAGES

OLD                      1080            t           1080t

NEW                       R              t           Rt

Total                                                2752
</pre>
Showing the reasoning for equation {{{highlight(1080t+Rt=2752)}}}.


Two unknown variables and one equation.
How long of time will this job be?
{{{highlight(t=2752/(1080+R))}}}