Question 805230
Here is some help, but not the full solution:


Using the ratio, 
sides are x and y.
{{{7/3=x/y}}}
{{{(7/3)y=x}}}


Knowing perimeter, 
{{{2x+2y=60}}}
{{{2(7/3)y+2y=60}}}
Solve this for y and go back to compute x.