10m..........8z.......1 lucrare
10m..........3z.........x lucrare. => direct proportionale
x= 3/8 amplificam cu 125 =>375/1000=37,5/100deci dupa 3 zile executa 37,5% din lucrare
10m........8z.........1 lucrare
16m.......x .............1 lucrare=> invers prop=>
x=10*8/16=5 zile