perimeter = 50, area = 144 what is the length and width of this rectangle?

 
 
 
or 
 
so 
 
next we look at 
 
Which becomes: 

 
 

after rearranging... 
 
after solving 
w=9 or w=16 
let's use w=9 (it's smaller so maybe easier to work with) 

 

so l=16, w=9