so if you're going 16 kmh, that means in 1 hour, you do 16 km, thus
[tex]\bf \begin{array}{ccll}
km s&hour s\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
16&1\\
76&h
\end{array}\implies \cfrac{16}{76}=\cfrac{1}{h}\implies h=\cfrac{76\cdot 1}{16}[/tex]