a+b+c=1000;relatia 1;
 a=b:4⇒b=4a;relatia 2
 c=a+b⇒c=a+4a⇒c=5a;relatia3;
 Inlocuim relatia 2 si3 in relatia 1⇒
a+4a+5a=1000;
 10a=1000.;
   a=1000:10
   a=100,inlocuim in relatia 2⇒
   b=400;
Inlocuim in relatia 3⇒
   c=500
 Varianta II
 /......./ a
 /......./........./......../........./b
 /....../........./......../......../........../ c. Total 1000
1000:10(segmente)=100 valoarea unui segment⇒
a=100;
b=400,
c=500
