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Convert 75.4 km/day to mph

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write the relation between km with miles and days with hours


\begin{gathered} 1mi\rightarrow1.6km \\ 1day\rightarrow24h \end{gathered}

apply the conversion using this factors


\frac{75.4\operatorname{km}}{day}\cdot\frac{1mi}{1.6\operatorname{km}}\cdot(1day)/(24h)\approx(1.9635mi)/(h)

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