16/20. We reduce that and get 4/5. 
After this it's much simpler to chage it.
100 dividied by 5 is 20. (20,40,60,80,100)
So the 4th number (4/100)
is 80. 80%.
20% she didn't and 80% she did :) (100-80)
 
        
                    
             
        
        
        
Answer:30 mi
3s = 2.5(s+2)
3s = 2.5s + 5
3s - 2.5s = 5
.5s = 5
s = 5/.5
s = 10 mph to the beach
:
:
Confirm this by finding the actual distance each way, should be the same
3*10 = 30 mi
Step-by-step explanation:
 
        
             
        
        
        
x= +7 or x=2-7 let me know if you need an explanation <3
        
             
        
        
        
You write it in word form