Răspuns :
in 30 zile = 30 *2kg = 60 kg de hrana
30 *2l = 60l de lichid
intr-un an = 365 * 2kg = 730kg de hrana
365 *2l = 730l de lichid
30 *2l = 60l de lichid
intr-un an = 365 * 2kg = 730kg de hrana
365 *2l = 730l de lichid