Question

Ana si Bogdan au 40 de mere.Daca Ana i-ar da lui Bogdan 6 mere aceasta ar avea de 3 ori mai putin ca el.Cate mere are Ana si cate are Bogdan?

Answer 1

a+b=40 mere
(a-6 mere)×3=b+6
3a-18 mere=b+6
-6
a |----------|---| +6
b |----------|----------|----------|---|

4p=40-6+6
4p=40
1p=10
a=10+6=16 mere
b=40-16=24
V:(16-6)×3=24+6
10×3=30
30=30 ( A )
R: Ana=16 mere
Bogdan=24 mere

Answer 2

40-6=34
a=/..../
b=/...../...../..../
34:4=8,5
a=8,5
b=8,5x3=25,5;25,5+6=31,5
v=8,5+31,5=40mere