Answer:
x=3.2
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
The cook made 7 pints
Step-by-step explanation:
 Just minus the half pints
 
        
             
        
        
        
Answer:
Kim is 3, Tom is 12
Step-by-step explanation:
4x + x = 15
combine like terms
 5x = 15
divide both sides by five
 x = 3
 
        
             
        
        
        
Answer:
Step-by-step explanation:
Change the 2/3 to 4/6
Now the ratio becomes 3:4:6
So the number of each is 
3x + 4x + 6x = 520
13x = 520
x = 40
Red = 3*40 =      120
Yellow = 4*40 = 160
Blue = 6 * 40  = 240
Total =               520