👤

Trei numere sunt proportionale cu 25% , 20% , respectiv 15% din suma lor. Ce fractie  din suma reprezinta fiecare numar?

AS DORI O REZOLVARE COMPLETA!



Răspuns :

[tex]\dfrac{x}{\frac{25S}{100}}=\dfrac{y}{\frac{20S}{100}}=\dfrac{z}{\frac{15S}{100}}=\dfrac{S}{\frac{60S}{100}}=\dfrac53[/tex]

[tex]x=\dfrac S4\cdot\dfrac53=\dfrac{5S}{12}[/tex]

[tex]y=\dfrac S5\cdot\dfrac53=\dfrac S3[/tex]

[tex]z=\dfrac{3S}{20}\cdot\dfrac53=\dfrac S4[/tex]