<PRE><B>Question 891417</B>
Perimeter = 2L + 2W
W = {{{1/3}}}L + 2
Substitute the value of W from the second equation into the first
P = 2L + 2W
68 = 2L + 2({{{1/3}}}L+2)
68 = 2L + {{{2/3}}}L + 4
Subtract 4 from each side
64 = 2{{{2/3}}}L
64 = {{{8/3}}}L
Multiply each side by {{{3/8}}}
24 = L
If the length is 24, the width is {{{1/3}}} of that + 2, or 10
24 + 24 + 10 + 10 = 68
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