Answer:
c) 0.24
Step-by-step explanation:
<h2> hope it is help full </h2>
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Im not 100 percent positive that this is correct but I think the answer is 
184
        
             
        
        
        
C 90 inches squared i took this same one
        
                    
             
        
        
        
400 m in 8 hours 
200 m in 4 hours 
100 m in 2 hours 
50 m in 1 hour 
His average speed is 50mph