Question 895757
w and L for width and length.


Formula for perimeter, using p for perimeter:
{{{p=2w+2L}}}


The problem description gives {{{L=3+2w}}}.


You are given p=30; and the question means, find the value for w.


{{{2w+2L=30}}}
{{{2w+2(3+2w)=30}}}
{{{w+3+w=15}}}
{{{2w+3=15}}}
{{{2w=15-3=12}}}
{{{highlight(w=6)}}}
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Use the given information given and formulated for L.
{{{L=3+2*6}}}
{{{highlight(L=15)}}}