Răspuns:
154 kg, 246kg, 200kg
Explicație pas cu pas:
i zi I-----I
ii zi I-------I { 400kg => a treia zi 600-400=200 kg
ii zi I-------I
iii zi I----I { 446kg => prima zi 600 - 446 = 154 kg
600-(200+154)=600-354=246 kg a doua zi
algebric
notam cu
a -prima zi
b- a doua zi
c- a treia zi
a+b+c=600
a+b=400 => c=600-(a+b)=600-400=200
a+b+c=600
b+c=446 => a=600-(b+c)=600-446=154
a+b+c=600
a=154 si c=200 => b=600-a-c=600-154-200=446-200=246