I think it would be 137.1, due to the total being 360. Just subtract.
        
                    
             
        
        
        
Answer:
Teachers are idiots that's why :)
 
        
                    
             
        
        
        
4.29 + 97.2 + 0.687 = 102.177
In adding decimal numbers, make sure that the decimal points are aligned. Since each number has different counts of numbers after the decimal point, use 0 to pad the missing places.
    
      4.290
    97.200
   <u>   0.687
</u>  102.177
The count of numbers after the decimal point is the same count of number of the decimal who has the greatest count of number after the decimal point.
4.29 only has 2 counts of places after the decimal point
97.2 only has 1 count of place after the decimal point
0.687 has 3 counts of places after the decimal point. 
The sum of the decimals must also have 3 counts of places after the decimal point.
        
             
        
        
        
 You just multiply the top and bottom numbers like it was two normal multiplication problems. Ex. 3/4x1/4=3/16 (3x1,4x4) But its different because you have to put them together to make a fraction (3/16).
 
        
             
        
        
        
I think is A but not to sure