Question

Daca 2 muncitori termina o lucrare in 8 zile, atunci 4 muncitori termina o lucrare in .........zile

Answer 1

muncitori = m
zile=z

2m-----8z
4m------x zile
______________
x=2x8:4
x=16:4
x=4-->4 muncitori termina lucrarea in 4 zile 

Answer 2

2 muncitori ...................... 8 zile
4 muncitori ...................... x zile
___________________________

$\frac{2}{4} = \frac{x}{8}$

$\frac{2 x 8}{4}$

$\frac{16 zile }{4}$

= 4 zile