Question

a window shaped like a parallelogram has an area of 18 1/3 square feet. The height of a window is 3 1/3 feet. How long is the base of the window?

Answer 1

You must first realize that
     base times height equals the area

Now that you remember that, all you have to do is work backwards...
     
18 1/3 
--------  
 3 1/3       

18 1/3 = 55/3

3 1/3 = 10/3

55/3 divided by 10/3
   =5 1/2