Question

Mais e em Regra de três

Answer 1

Resposta:

$a) \; 5 \; chocolates:\text{ \bf R\ 10,75}\\\dfrac{1}{2.15} = \dfrac{5}{x}\\\\1\times x = 2.15\times 5\\\\x = 10.75$

b) 2 latas de óleo: R$ 2,56

$\dfrac{3}{3,84}=\dfrac{2}{x}\\\\3\times x=3,84\times 2\\\\3x=7,68\\\\x=\dfrac{7,68}{3}\\\\x=2,56$

c) 7 kg de batatas: R$ 10,45

$\dfrac{1,5}{2,24}=\dfrac{7}{x}\\\\1,5\times x=2,24\times7\\\\1,5x=15,68\\\\x=\dfrac{15,68}{1,5}\\\\x=10,45$

Explicação passo-a-passo:

$\begin{center}\fbox{\rule{2ex}{2ex}\hspace{20ex}{ESPERO TER AJUDADO}\hspace{20ex}\rule{2ex}{2ex}}\end{center}$