Question

dacă a supra 0,5 =3 supra b atunci 10ab =?

Answer 1

   
[tex]\displaystyle\\ \frac{a}{0,\!5} = \frac{3}{b} \\\\ \text{Produsul mezilor = produsul extremilor.}\\\\ ab = 0,\!5\times 3 \\\\ 10ab = 10\times 0,\!5\times 3 = 5 \times 3 = \boxed{\bf 15}[/tex]