Question 1198709
<pre>
                    WORK RATE

old reaper          1/x

new reaper          1/1.5

both combined       1/1
</pre>
{{{1/x+1/1.5=1}}}

-

{{{1/x=1-1/1.5}}}

{{{1/x=1-2/3=1/3}}}

{{{1/x=1/3}}}

{{{highlight(x=3)}}}