Răspuns :
8m.............1l................6z
8m..............x.................2z
x=1*2/6= 1/3
1-1/3= (3-1)/3= 2/3
8m.............1l..................6z
6m.............2/3.................y
6/y= 6/8 * 1/2/3
6/y=6/8 * 3/2
6/y= 9/8
y=6*8/9
y=2*8/3
y=16/3= 5,3 zile aproximativ 6 zile
8m..............x.................2z
x=1*2/6= 1/3
1-1/3= (3-1)/3= 2/3
8m.............1l..................6z
6m.............2/3.................y
6/y= 6/8 * 1/2/3
6/y=6/8 * 3/2
6/y= 9/8
y=6*8/9
y=2*8/3
y=16/3= 5,3 zile aproximativ 6 zile
8 muncitori.în 3 zile au facut jumatate din lucrare
8muncitori..........3 zile
6muncitori...........x zile
X=8x3/6=4 zile
3+4=7 zile