12 tables seat 4 people = 48 seats
28 tables seat 2 people= 56
therefore there are 104 seats
        
             
        
        
        
The Answer is (D. No solution)
        
             
        
        
        
Answer: x+5 with a remainder of 3 (can also be said as 3/x-4)
Step-by-step explanation: See attachment
 
        
             
        
        
        
20 cans in kilograms = 336 grams * 20 cans / 1000 = 6.72 kg