Răspuns :
5×4=20 kg peste consuma un delfin adult
3×20+3×5=75kg consuma cei doi delfini in 3 zile
5*4=20 kg un adult delfin consuma zilnic
20* 3 = 60 kg in 3 zile
5 * 4 = 12 kg consuma zilnic un delfin pui
12+ 60= 72 kg consuma delfinii cei 2 in 3 zile
20* 3 = 60 kg in 3 zile
5 * 4 = 12 kg consuma zilnic un delfin pui
12+ 60= 72 kg consuma delfinii cei 2 in 3 zile