Question 303565
Width : Length 
2 : 3 

Perimeter = 2* width + 2*length 

Ratio becomes: 

Width : Length 
4 : 6 

Total units = 4 + 6 = 10 

Perimeter = 40 

Therefore: 

10 units ----- 40 ft 
1 unit  ------- 40/10 ft = 4 ft
2 units -------- 4 * 2 ft = 8 ft (width)
3 units ------- 4*3 ft = 12 ft (Length) 

Answer: Width is 8 ft and Length is 12 ft.