Gramar
posted by Luisa .
a 4 hour tour averaged 3 miles per hour. if the average rate was 2.5 miles per hour for the first 3 hours what was the average rate for the last hour

Math??? 
Writeacher
What?

Gramar 
Steve
since distance = speed*time, add up the distances:
2.5*3 + x*(43) = 3*4
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