The ratio of the areas of the two polygons can be 25:45
Just Multiply the two give numbers by 5 and you get the answer.
 
        
                    
             
        
        
        
362.50 for tennis and golf balls.
To find the answer divide the dollar amount by how many cans or boxes each cost then multiply that answer by the total amount purchased.
Golf balls
45/2=22.50 each box
22.5*5=112.50 total
Tennis balls
30/12=2.50 each can
2.50*100 = 250.00
add the dollar amounts  together
112.50+250.00 =362.50
        
             
        
        
        
If Ian uses 1/20 of the ketchup 4 times, this is equal to 4/20, or 

.

 can be simplified to 

, which means we need to work out 

 of 12.2

 is equivalent to 20%, which as a decimal is 0.2
0.2 x 12.2 = 2.44 - however, this is how much he has 
used, and we need to figure out how much is left.
12.2 - 2.44 = 9.76
So, Ian has 9.76 oz remaining :)
 
        
        
        
Answer:
I would go with the second one.
Step-by-step explanation: