Respuesta :

75 miles in 2 hours means
37.5 in 1 hour
So
37.5*5 miles in 5 hours
187.5 miles
And 
37.5*17 miles in 17 hours
637.5 miles

4 1/2 hour if 2 hours was 75 another 2 hours would be 4 hours and the remaining hour would be 1/2 because they are basing by every two hours
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