Um automóvel é dirigido ao longo de uma estrada caracterizada por zonas alternadas de velocidades permitidas de 40km/h e 60km/h. Se o motorista mantém rigorosamente essas velocidades nas respectivas zonas, e se todas as zonas têm o mesmo comprimento, qual a velocidade média em km/h, em um trecho correspondente a um número par de zonas?
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Um automóvel é dirigido ao longo de uma estrada caracterizada por zonas alternadas de velocidades pe...
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