Răspuns :
I zi=7 kg capsuni
aII-a zi=7x7=49 kg capsuni
120-7-49=64 kg capsuni
aIII-a zi=64 kg capsuni
aII-a zi=7x7=49 kg capsuni
120-7-49=64 kg capsuni
aIII-a zi=64 kg capsuni
a doua zi : 7x7=49 kg
prima zi + a doua zi=7+49=56 kg
a treia zi : 120-56=64 kg
prima zi + a doua zi=7+49=56 kg
a treia zi : 120-56=64 kg