Răspuns :
8.......................12zile (12-2)
8+2...................x zile
8/10=x/10 x=8*10/10=80/10=8 zile
8+2...................x zile
8/10=x/10 x=8*10/10=80/10=8 zile
Răspuns:
8muncitori.........12zile
10........................x zile
x=(10+12)/8
x=22/8=2,75
Explicație pas cu pas: am folosit regula de trei simpla, succes!!!