Răspuns :
2 muncitori-un sant in 6 zile
2x6=6xa
12=6a
a=12:6=2
8 muncitori in 2 zile
2x6=6xa
12=6a
a=12:6=2
8 muncitori in 2 zile
2munc......8 ore.....6zile;;;;;6 munc.....,8 ore.....x zile. exista inversa proportionalitate=> 2*6=6*x=> x=2 zile