First let's get rid of the
in the denominator of the fraction on the right side of the equation. This will help to get only
and a coefficient on one side of the equation:


Now, simply divide by 730 to find
:


The complete question in the attached figure
we know that
t<span>he centroid is always 2/3 the distance of each median to each vertex
TW=30
TW=TY+YW
TY=(2/3)*30---------> TY=20
then
YW=TW-TY-----------> YW=30-20-----------> YW=10
the answer is
YW=10</span>