Question

Prundurel e cioban el are 3 turne de oi in prima si a doua turma are 100 oi in prima si a treia are 90 oi iar in a doua si a treia are 100 oi
Cate oi are Prundurel in fiecare turma ?

Answer 1

Răspuns:

a+b=100

a+c=90

b+c=100

a+b+a+c+b+c=100+90+100

2(a+b+c)=290

a+b+c=290:2

a+b+c=145

c=145-100=>c=45 oi in a3a turma

a=145-100=>a=45 oi in prima turma

b=145-90=>b=55 oi in a2a turma