Question 343487
The perimeter of a rectangle is 
{{{P=2L+2W=96}}}
{{{2(5x)+2(7x)=96}}}
{{{10x+14x=96}}}
{{{24x=96}}}
{{{x=4}}}
{{{L=5x}}}
{{{highlight(L=20)}}}cm
.
.
{{{W=7x}}}
{{{highlight(W=28)}}}cm