Question 1022624
"Shovel snow"  does not indicate HOW MUCH SNOW, but assume the shoveling of snow will be a constant quantity of snow and is ONE JOB.


Rate doing a job, RT=J.


Different people working at each different rate use unit of JOB AMOUNT per TIME.


<pre>
Person            Rate 

MANNY              {{{1/m}}}

KARA               {{{1/44}}}

BOTH COMBINED      {{{1/18}}}</pre>


{{{1/m+1/44=1/18}}}


Common denominator is {{{2*2*3*3*11*m}}}.

{{{(36*11m)(1/m+1/44)=(36*11m)/18}}}

{{{36*11+9m=22m}}}

{{{13m=36*11}}}

{{{m=30}}}  to two significant figures