Answer plzzz Well its easy but i cant solve help me to slove that Q plz

Mr. Harry had five children: he had 4 daughters, and each daughter had a brother. The daughters all had the same brother. Mr. Harry had four daughters and a son.
Who knows how many children he has now? Maybe they all died, and he has none.
Answer:
8 kids total
Explanation:
if each sister had a brother, then its 8
unless he only has 4 daughters