2/5 = 8/20 and 3/10 = 6/20 which =  add the numerator 14 so 14/20 and will have 6 pints left over so she will need to buy 8 pints
        
             
        
        
        
A) 110/21 = 5 5/21
B) 10
C) 21/4 = 5 1/4
D) 16/5 = 3 1/5
        
             
        
        
        
Answer: B
Step-by-step explanation:????
Troll
 
        
             
        
        
        
Answer:
x=9
Step-by-step explanation:
3.5x - 11 = 20.5
Add 11 to each side
3.5x - 11+11 = 20.5+11
3.5x = 31.5
Divide each side by 3.5x
3.5x/3.5 = 31.5/3.5
x =9