problema nr 1
Andreea are 2 x (50 + 50)=2 x 100=200 lei
Catalin si Ciprian au de fapt cate 200-50=150 lei
Andreea=200 lei
Ciprian=150 lei
Catalin=150lei
problema nr 2
cele 3 numere consecutive se noteaza astfel:
a, a+1, a+2
2 x a+ (a+1)+2 x (a+2)=100
2 x a+a+1 +2 x a+4=100
5 x a+5=100
5 x a=100-5=95
a=95:5=19
a=19
al doilea nr=19+1=20
al treilea nr=21