Răspuns :
g+r=80
g=7xr
7xr+r=80
8 r=80
r=80:8
r=10 rate
g=7x10
g=70 gaini
V: 70+10=80 ( gaini + rate)
g=7xr
7xr+r=80
8 r=80
r=80:8
r=10 rate
g=7x10
g=70 gaini
V: 70+10=80 ( gaini + rate)