Răspuns :
I I----------I----------I
II I----------I
III I----------I-----------I----------I 10 parti - 750
IV I----------I-----------I-----------I----------I
1.Aflam pe II.
750 : 10 = 75
2. Aflam pe I.
75 X 2 = 150
3.Aflam pe III.
75 X 3 = 225
4.Aflam pe IV.
75 X 4 = 300
verificare: 75+150+225+300= 750
R : I = 75
II=150
III=225
IV=300
II I----------I
III I----------I-----------I----------I 10 parti - 750
IV I----------I-----------I-----------I----------I
1.Aflam pe II.
750 : 10 = 75
2. Aflam pe I.
75 X 2 = 150
3.Aflam pe III.
75 X 3 = 225
4.Aflam pe IV.
75 X 4 = 300
verificare: 75+150+225+300= 750
R : I = 75
II=150
III=225
IV=300
a+b+c+d=750
b=a/2
a=d/2
b=d/2/2= d/2 *1/2= d/4
c=3b= 3*d/4= 3d/4
d/2 +d/4 + 3d/4 +d =750 aducem la acelasi numitor
2d+d+3d+4d=3000
10d=3000
d=300
a=300/2=150
b=300/4=75
c=3*300/4= 3*75=225
b=a/2
a=d/2
b=d/2/2= d/2 *1/2= d/4
c=3b= 3*d/4= 3d/4
d/2 +d/4 + 3d/4 +d =750 aducem la acelasi numitor
2d+d+3d+4d=3000
10d=3000
d=300
a=300/2=150
b=300/4=75
c=3*300/4= 3*75=225