A baby elephant weighs 150 pounds when born. It gains 2 pounds per day during the first year. How many days will it take the elephant to weigh a total of 224 pounds?
The elephant needs to gain 74 pounds because 224 - 150 = <<224-150=74>>74
It will take 37 days to gain this weight because 74 / 2 = <<74/2=37>>37. Answer: \boxed{37}.