Question 844675
L for length and w for width.


Perimeter of 32 cm. means {{{2L+2w=32}}}, which you can simplify into {{{L+w=16}}} (done by dividing left and right by 2.)


The other description means, {{{L=1+2w}}}.  Substitute this in the perimeter simplified equation.


{{{L+w=16}}}
{{{(1+2w)+w=16}}}
{{{1+2w+w=16}}}
{{{1+3w=16}}}
{{{3w=15}}}
{{{highlight(w=5)}}}
You finish!