Răspuns :
Fie x prețul prosopului, at fata de masa costa x+80
x+x+80=360
2x=280
x=140primul produs
140+80=220 al doilea produs
f+p=360
p=f-80
p+80+p=360
2p+80=360
2p=360-80
2p=280
p=280:2
p=140 lei
f=140+80=220 lei
p=f-80
p+80+p=360
2p+80=360
2p=360-80
2p=280
p=280:2
p=140 lei
f=140+80=220 lei