Question

um sanduíche e feito com 270g de carne. quantos quilogramas de carne são necessários para se fazer 200 desses sanduíches?

Answer 1

1 sanduíche = 270g
200 sanduíches = x 
x = 270g * 200
x = 54000g 
Espero ter ajudado = )

Answer 2

• A ↔

$\sf x\cdot \:1=270\cdot \:200\\\\\\x=270\cdot \:200\\\\\\\to \boxed{\sf =54,000/1000 \ => 54kg}$

• B ↔

$\sf 0.27x=1\cdot \:17.55\\\\\\0.27x=17.55\\\\\\0.27x\cdot \:100=17.55\cdot \:100\\\\\\27x=1755\\\\\\\dfrac{27x}{27}=\dfrac{1755}{27}\\\\\\\to \boxed{\sf =65}$