[tex] \bf \begin{array}{ccll}
hours&puzzles\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
\frac{3}{4}&1\\\\
3&p
\end{array}\implies \cfrac{\quad \frac{3}{4}\quad }{3}=\cfrac{1}{p}\implies \cfrac{\quad \frac{3}{4}\quad }{\frac{3}{1}}=\cfrac{1}{p}
\\\\\\
\cfrac{3}{4}\cdot \cfrac{1}{3}=\cfrac{1}{p}\implies \cfrac{3}{12}=\cfrac{1}{p}\implies 3p=12\implies p=\cfrac{12}{3}\implies p=4 [/tex]
