Respostas

2014-07-13T12:11:52-03:00
1 hora = 1hora
10 min = 1/6 hora
tempo total = 7/6 hora.
v = s/t
72= \frac{s}{ \frac{7}{6 } } \\  \\ 
72x \frac{7}{6}=s \\  \\ 
s=84km.

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