Question

Suna a doua numere este egala cu 122, iar raportul lor este$\frac{3}{7}$ . Aflati numerele.

Answer 1

[tex]\frac{x}{y}=\frac{3}{7} \Rightarrow x=\frac{3y}{7}\\ x+y=122\\ \frac{3y}{7}+y=122|\cdot7\\ 3y+7y=854\\ 10y=854 \Rightarrow y=85,4\\ x+85,4=122\\ x=122-85,4\\ x=36,6[/tex]

Answer 2

fie a,b numerele
⇒a/b=3/7⇔a/3=b/7⇔a+b/3+7=122/10=12,2
a=12,2x3=36,6
b=12,2x7=85,4
verificare:36,6+85,4=122,0