20
There are 10 feet of posts on each side. That means there are 40 feet of fencing in total. If you divide that by two (to represent posts being 2 feet apart) then you get 20. There are 20 posts needed.
 
        
             
        
        
        
Can i please get an image and i will be glad to help :)
 
        
             
        
        
        
(22 + 15.50 + 2.75) 15 
(22 * 15) + (15.50 * 15) + (2.75 * 15)
 
        
             
        
        
        
Answer:
240 minutes/ 4 hours
Step-by-step explanation: