Question

André, Guilherme e Matheus juntos tem R$720,00. Sabe-se que André tem o dobro de Guilherme e Matheus o triplo de André. Quanto tem cada um?

Answer 1

$Guilherme \ \ = \ \ x \\\\ Andr\acute{e} \ \ = \ \ 2x \\\\ Matheus \ \ = \ \ 6x \\\\\ Total \ \ = \ \ 720 \\\\ \\\\ \begin{matrix} \underbrace{ \ \ Equac_{\!\!,}\tilde{a}o : \ \ } \\\\ x \ + \ 2x \ + \ 6x \ \ = \ \ 720 \\\\ 9x \ \ = \ \ 720 \\\\ x \ \ = \ \ \dfrac{720}{9} \\\\ \boxed{ \ x \ \ = \ \ 80 \ } \end{matrix} \\\\ \\\\ \\\\ { \bf RESPOSTA: \ } \\\\ Guilherme \ \ = \ \ R\ \ 80 \\\\ Andr\acute{e} \ \ = \ \ R\ \ 160 \\\\ Matheus \ \ = \ \ R\ \ 480$