Răspunsuri

2014-06-10T17:07:05+03:00
X- 100 lei
y=500 lei

x+y=16 => x=16-y
x*100+y*500=3600
100(16-y)+500y=3600
1600-100y+500y=3600
400y=3600-1600
400y=2000
y=2000:400
y=5 bancnote de 500

x=16-5
x=11 bancnote de 100

Verificare
11*100+5*500=
1100+2500=3600