[tex]\it 2\dfrac{1}{2}=2,5\\ \\ \{a;\ 1,5;\ 2,5 \}\ d.\ p.\ \{10;\ b;\ 40\} \Rightarrow \dfrac{a}{10}=\dfrac{1,5}{b}=\dfrac{2,5}{40} \Rightarrow\begin{cases} \it a=\dfrac{2,5\cdot10}{40}=\dfrac{25^{(5}}{40}=\dfrac{5}{8}\\ \\ \\ \it b=\dfrac{40\cdot1,5}{2,5}=\dfrac{600}{25}=24\end{cases}[/tex]
