Question

Din 15 metri de stofa se confectioneaza 6 costume.Cati metri de stofa sunt necesari pentru a confectiona 10 costume?

Answer 1

15 m....d.p...........6 costume
x.......................10 costume

15/x=6/10
x=15·10/6=25 m

Answer 2

$15~m~stofa~.........~6~costume x~.......~10~costume ---------------------------------------- Sunt~marimi~direct~proportionale~(~d.p.~) \frac{15}{x} = \frac{6}{10} = \ \textgreater \ x = \frac{15 * 10}{6} = \ \textgreater \ x = \frac{150}{6} = \ \textgreater \ \boxed{x = 25~m~stofa}$