a+b+c=2506
a=[tex] \frac{b}{2} [/tex]
c=b+6
[tex] \frac{b}{2} [/tex]+b+b+6=2506
[tex] \frac{b}{2} [/tex]+2b=2506-6
aducem la aceiasi baza adica 2 si vom avea
[tex] \frac{b}{2} [/tex]+[tex] \frac{4b}{2} [/tex]=2500
[tex] \frac{5b}{2} [/tex]=2500
5b=2*2500
5b=5000
b=5000:5
b=1000 masinute in al doilea magazin
a=1000:2
a=500 masinute in primul magazin
c=1000+6
c=1006 masinute in al treilea magazin
