Penguins spend almost 75% of their lives in the sea. An emperor penguin in the wild has a life span of about 18 years. About how many years does this penguin spend in the sea?
You need to work out 75% of 18. To do this you need to divide 18 by 4. This is 4.5. Then, to get 75%, you need to times that number by 3. The answer is 13.5 years
