Question

Ioana si Dan au împreuna 10 mere. Dan si Maria au împreuna 12 mere iar Ioana si Maria au 8 mere. Cate mere are fiecare?

Answer 1

I+D=10
D+M=12. ;12-10=2; M=I+2;
I+M=8
I+I+2=8; 2I=8-2; 2I=6; I=6÷2;
I=3
M=3+2;
M=5
D=10-3;(I+D=10)
D=7.
R:. Ioana are 3mere, Maria are 5, iar Dan 7 .