Question 1006472
FENCE per HOUR is the rate unit


Sum of individual rates is their combined rate.
{{{(2/3)/3+(1/3)/2}}}, this combined rate.


{{{2/9+1/6}}}


{{{(2/9)(2/2)+(1/6)(3/3)}}}


{{{4/18+3/18}}}


{{{7/18}}}, FENCE per HOUR.
This is  {{{highlight(18/7=(2&4/7)*HOURS)}}}.