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Cel mai inteligent răspuns!
2014-08-06T16:25:21+03:00
14. Notam Alina=A, si Petre=P
5A=P
A+25=P-75
A+25=5A-75
72+25=5A-A
4A=100
A=25 lei
P=25*5=125

16.Alexandra=400 lei
400-100=300
300:3=100=rucsac
Brosa=(400-100-100):10=200:10=20
Alexandra ramane cu :
400-100-100-20=180 lei