Answer: 7.5
Step-by-step explanation:
 
        
             
        
        
        
Answer:
90/1.5=60 mph
Step-by-step explanation:
I assume that the train is traveling at constant speed.
Between 12:45 pm and 2:15 pm the train has traveled 180-90=90 miles. So 90 miles in 1.5 hours which means that its speed is 90/1.5=60 mph
  
        
                    
             
        
        
        
Answer:
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