Răspuns:
1c.p=20kg
1c.m=15kg
Explicație pas cu pas:
4c.m.......6c.p......180kg.
3c.m.......4c.p......125kg.
*Se înmulțește prima linie cu 3,iar a doua cu 4*
12c.m......18c.p......540kg.
12c.m......16c.p......500kg.
__________________
0c.m.......2c.p........40kg.
2c.p=40kg.
1c.p.=40:2
1c.p=20kg
________
4c.m.......120kg......180kg.
4c.m=180-120=60
4c.m=60
1c.m=60:4
1c.m=15
______
Verificare:
60kg+120kg.=180kg.
