Answer:
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Step-by-step explanation:
 
        
             
        
        
        
Answer:
4
Step-by-step explanation:
1/3 of 30 students play sport
30×1/3
= 10
2/5 of this number plays soccer 
10×2/5
= 20/5
= 4
 
        
             
        
        
        
6:7
?:15
It's some crazy number I worked out but: 12.86 is the best thing I could get lol
        
             
        
        
        
What exactly are you asking?
        
             
        
        
        
I think this might work 440=55x-275 then solve