Question

Dacă 12 m de stofa costa 110,4 lei, cat costa 5 m din aceasi stofa?

Answer 1

regula de 3 simpla
daca 12m costa....110,4 lei
         5m costa.....x lei
x=110,4*5 / 12 => 46 lei

Answer 2

12m----------------110,4lei

5m-----------------xlei
_________________________

$x=\frac{5*110,4}{12}$

$x=\frac{552}{12}$

$x=46lei$