Answer:
54=12+r
Step-by-step explanation:
'Sum' means to add.
 
        
                    
             
        
        
        
Answer: 30ft
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Medium
Step-by-step explanation:
The computation is shown below:
The cost for the small and medium bag is shown below:
As we know that 
1kg = 1000g
So 3kg = 3000g
Now for small bags
= 0.95 ÷ 250 × 3000
= £11.40
For medium bags
= £1.80 ÷ 500 × 3000
= £10.80
So here the medium bag would represent the better value