Răspuns:
a)
r+c+g=100
g=2c
c=3r
g 2c 6c
------ = -------- = ------------ ( simplificam cu c) = 6
r c/3 c
b)
r+g+c=100 <=> r+2c+c = 100 <=> r+6r+3r = 100 <=> 10r = 100 | /10
=> r=10 => c=30 => g=60
c)
100 pasari mananca 100 kg in 100 zile
=> 10 pasari mananca 10 kg in 100 zile
=> 10 pasari mananca 1 kg in 10 zile