Question 944749
w, width of plot
L, length of plot
u, UNIFORM width border around plot
;
w=10
L=15


{{{wL}}}, area of the plot.
{{{(w+2u)(L+2u)}}}, area of the plot AND the walkway.


The wording of the last part of the description means that the total area is two times the plot area; and the question is, find u.


{{{highlight_green((w+2u)(L+2u)=2wL)}}}
Solve for u, and plug in the given values.